52		Eat and Run (Comedy, Sci-Fi, 1987)
45		Space Case (Comedy, Sci-Fi, 1992)
45		Tribulation 99: Alien Anomalies Under America (Comedy, Sci-Fi, 1992)
45		Coneheads (Comedy, Sci-Fi, 1993)
45		Serena the Sexplorer (Comedy, Sci-Fi, 2013)
45		Freaked (Comedy, Sci-Fi, 1993)
45		The Roly Poly Man (Comedy, Sci-Fi, 1994)
45		The Killer Robots and the Battle for the Cosmic Potato (Comedy, Sci-Fi, 2009)
44		Niagaravation (Comedy, Sci-Fi, 1995)
44		Plan 10 from Outer Space (Comedy, Sci-Fi, 1995)
44		Invasion: Stanford 1991 A.D. (Comedy, Sci-Fi, 1990)
44		Hell's Belles (Comedy, Sci-Fi, 1995)
44		The Spirit of '76 (Comedy, Sci-Fi, 1990)
44		Mystery Science Theater 3000: The Movie (Comedy, Sci-Fi, 1996)
44		Meet the Applegates (Comedy, Sci-Fi, 1990)
44		Terminal City Ricochet (Comedy, Sci-Fi, 1990)
43		As Time Goes by (Comedy, Sci-Fi, 1988)
43		The Invisible Kid (Comedy, Sci-Fi, 1988)
43		Walkin' on Sunshine: The Movie (Comedy, Sci-Fi, 1997)
43		Norman's Awesome Experience (Comedy, Sci-Fi, 1988)
43		Wooly Booly: Ang classmate kong alien (Comedy, Sci-Fi, 1989)
43		It Came from Somewhere Else (Comedy, Sci-Fi, 1988)
43		Mutant on the Bounty (Comedy, Sci-Fi, 1989)
43		Orgazmo (Comedy, Sci-Fi, 1997)
42		The American Way (Comedy, Sci-Fi, 1986)
42		Virtue (Comedy, Sci-Fi, 1999)
42		The Trouble with Dick (Comedy, Sci-Fi, 1986)
42		Superstarlet A.D. (Comedy, Sci-Fi, 2000)
42		The Mating Habits of the Earthbound Human (Comedy, Sci-Fi, 1999)
42		What Planet Are You From? (Comedy, Sci-Fi, 2000)
42		Class of Nuke 'Em High Part 3: The Good, the Bad and the Subhumanoid (Action, Comedy, Sci-Fi, 1994)
42		Amazon Women on the Moon (Comedy, Sci-Fi, 1987)
42		I epithesi tou gigantiaiou mousaka (Comedy, Sci-Fi, 1999)
41		The Brother from Another Planet (Comedy, Sci-Fi, 1984)
41		Godzilla 2001 (Comedy, Sci-Fi, 2001)
41		UFOria (Comedy, Sci-Fi, 1985)
41		The Revenge of the Teenage Vixens from Outer Space (Comedy, Sci-Fi, 1985)
41		Morons from Outer Space (Comedy, Sci-Fi, 1985)
41		Hyperspace (Sci-Fi, Comedy, 1984)
41		Repli-Kate (Comedy, Sci-Fi, 2002)
41		The Animal (Comedy, Sci-Fi, 2001)
41		Evolution (Comedy, Sci-Fi, 2001)
40		Sleeper (Comedy, Sci-Fi, 1973)
40		2076 Olympiad (Comedy, Sci-Fi, 1977)
40		The Sexplorer (Comedy, Sci-Fi, 1975)
40		Dark Star (Comedy, Sci-Fi, 1974)
40		The Thing with Two Heads (Comedy, Sci-Fi, 1972)
40		Illegal Alien (Comedy, Sci-Fi, 1982)
40		I Was a Zombie for the F.B.I. (Comedy, Sci-Fi, 1982)
40		Airplane II: The Sequel (Comedy, Sci-Fi, 1982)
40		Xing ji dun tai (Sci-Fi, Comedy, 1983)
40		What's Up, Hideous Sun Demon (Comedy, Sci-Fi, 1983)
40		My Stepmother Is an Alien (Comedy, Romance, Sci-Fi, 1988)
40		Britannia Hospital (Comedy, Sci-Fi, 1982)
40		Heartbeeps (Sci-Fi, Comedy, 1981)
40		Spaced Out (Comedy, Sci-Fi, 1979)
40		Simon (Comedy, Sci-Fi, 1980)
40		The Incredible Shrinking Woman (Comedy, Sci-Fi, 1981)
40		Caveman (Comedy, Sci-Fi, 1981)
40		Very Close Encounters of the Fourth Kind (Comedy, Sci-Fi, 1978)
40		Flesh Gordon (Comedy, Sci-Fi, 1974)
40		Visit to a Small Planet (Comedy, Sci-Fi, 1960)
40		When London Sleeps It Came Alive (Comedy, Sci-Fi, 2010)
40		End of Days, Inc. (Comedy, Sci-Fi, 2015)
40		Time Flies (Comedy, Sci-Fi, 1944)
40		Hot Tub Time Machine 2 (Comedy, Sci-Fi, 2015)
40		Her Husband's Affairs (Comedy, Sci-Fi, 1947)
40		Alien Sex Party (Comedy, Sci-Fi, 2003)
40		Hot Tub Time Machine (Comedy, Sci-Fi, 2010)
40		Absolutely Anything (Comedy, Sci-Fi, 2015)
40		Final Flesh (Comedy, Sci-Fi, 2009)
40		Robodoc (Comedy, Sci-Fi, 2009)
40		The Three Stooges in Orbit (Comedy, Sci-Fi, 1962)
40		The Road to Hong Kong (Comedy, Sci-Fi, 1962)
40		The Perfect Woman (Comedy, Sci-Fi, 1949)
40		Revenge of the Bimbot Zombie Killers (Comedy, Sci-Fi, 2014)
40		Space Milkshake (Comedy, Sci-Fi, 2012)
40		Transolar Galactica (Comedy, Sci-Fi, 2011)
40		The Twonky (Comedy, Sci-Fi, 1953)
40		The Atomic Kid (Comedy, Sci-Fi, 1954)
40		Folklore (Comedy, Sci-Fi, 2012)
40		Child's Play (Comedy, Sci-Fi, 1954)
40		The Noble Experiment (Comedy, Sci-Fi, 1955)
40		The Search for Simon (Comedy, Sci-Fi, 2013)
40		Have Rocket -- Will Travel (Comedy, Sci-Fi, 1959)
40		The 30 Foot Bride of Candy Rock (Comedy, Sci-Fi, 1959)
40		Totò nella luna (Comedy, Sci-Fi, 1958)
40		Night of the Alien (Comedy, Sci-Fi, 2011)
40		Mister Drake's Duck (Sci-Fi, Comedy, 1951)
40		Rock Jocks (Comedy, Sci-Fi, 2012)
40		Atop the Fourth Wall: The Movie (Comedy, Sci-Fi, 2015)
40		Hello Down There (Comedy, Sci-Fi, 1969)
40		The Bed Sitting Room (Comedy, Sci-Fi, 1969)
40		2069 A.D. (Comedy, Sci-Fi, 1969)
40		Gargaroth (Comedy, Sci-Fi, 2004)
40		Frequently Asked Questions About Time Travel (Comedy, Sci-Fi, 2009)
40		The Last Dudes on Earth (Comedy, Sci-Fi, 2005)
40		The Monitors (Comedy, Sci-Fi, 1969)
40		Henry's Night In (Comedy, Sci-Fi, 1969)
40		Dr. Dildo's Secret (Comedy, Sci-Fi, 1970)
40		Evil Alien Conquerors (Comedy, Sci-Fi, 2003)
40		Phil the Alien (Comedy, Sci-Fi, 2004)
40		Crimes of the Future (Comedy, Sci-Fi, 1970)
40		From Other Worlds (Comedy, Sci-Fi, 2004)
40		The Day the Fish Came Out (Comedy, Sci-Fi, 1967)
40		Cyxork 7 (Comedy, Sci-Fi, 2006)
40		Kiss Me Quick! (Comedy, Sci-Fi, 1964)
40		Target Audience 9.1 (Comedy, Sci-Fi, 2007)
40		Mock Up on Mu (Comedy, Sci-Fi, 2008)
40		Horror in the Wind (Comedy, Sci-Fi, 2008)
40		50,000 B.C. (Before Clothing) (Comedy, Sci-Fi, 1963)
40		Hank, Aaron and the Alien from Outer Space (Comedy, Sci-Fi, 2009)
40		Probable Robot (Comedy, Sci-Fi, 2015)
40		Alien Autopsy (Comedy, Sci-Fi, 2006)
40		I'll Believe You (Comedy, Sci-Fi, 2006)
40		Uchuujin from Outer Space (Comedy, Sci-Fi, 2007)
40		Dr. Goldfoot and the Bikini Machine (Comedy, Sci-Fi, 1965)
40		Way... Way Out (Comedy, Sci-Fi, 1966)
36		Tank Girl (Action, Comedy, Sci-Fi, 1995)
36		Class of Nuke 'Em High Part II: Subhumanoid Meltdown (Comedy, Horror, Sci-Fi, 1991)
35		Lobster Man from Mars (Comedy, Horror, Sci-Fi, 1989)
33		G.O.R.A. (Adventure, Comedy, Sci-Fi, 2004)
32		Junior (Comedy, Romance, Sci-Fi, 1994)
32		Oblivion (Adventure, Comedy, Sci-Fi, 1994)
32		Brainscan (Comedy, Horror, Sci-Fi, 1994)
32		The High Crusade (Adventure, Comedy, Sci-Fi, 1994)
32		Pet Shop (Comedy, Family, Sci-Fi, 1994)
32		The Truman Show (Comedy, Drama, Sci-Fi, 1998)
32		Prison Planet 2: The Armageddon (Action, Comedy, Sci-Fi, 1994)
32		Breakfast of Aliens (Comedy, Horror, Sci-Fi, 1993)
32		Man's Best Friend (Comedy, Horror, Sci-Fi, 1993)
32		Humanoids from Atlantis (Action, Comedy, Sci-Fi, 1992)
32		Critters 4 (Comedy, Horror, Sci-Fi, 1992)
32		Les visiteurs (Comedy, Fantasy, Sci-Fi, 1993)
32		Chao ji xue xiao ba wang (Action, Comedy, Sci-Fi, 1993)
32		Body Melt (Horror, Comedy, Sci-Fi, 1993)
32		Memoirs of an Invisible Man (Comedy, Romance, Sci-Fi, 1992)
32		That Little Monster (Comedy, Horror, Sci-Fi, 1994)
32		C.H.O.M.P.S. (Comedy, Family, Sci-Fi, 1979)
32		The Man with Two Brains (Comedy, Romance, Sci-Fi, 1983)
32		Cheech and Chong's Next Movie (Comedy, Crime, Sci-Fi, 1980)
31		There's Nothing Out There (Comedy, Horror, Sci-Fi, 1991)
31		The Borrower (Comedy, Horror, Sci-Fi, 1991)
31		Suburban Commando (Action, Comedy, Sci-Fi, 1991)
31		Guyver (Sci-Fi, Action, Comedy, 1991)
31		The Age of Insects (Sci-Fi, Comedy, Horror, 1990)
31		Spaced Invaders (Adventure, Comedy, Sci-Fi, 1990)
31		Frankenhooker (Comedy, Horror, Sci-Fi, 1990)
31		Kamillions (Comedy, Romance, Sci-Fi, 1990)
31		Blobermouth (Comedy, Horror, Sci-Fi, 1991)
31		Critters 3 (Comedy, Horror, Sci-Fi, 1991)
31		Mars Attacks! (Action, Comedy, Sci-Fi, 1996)
31		Space Truckers (Adventure, Comedy, Sci-Fi, 1996)
31		La lengua asesina (Comedy, Sci-Fi, Horror, 1996)
31		They Bite (Comedy, Horror, Sci-Fi, 1996)
31		Jack Brown Genius (Comedy, Fantasy, Sci-Fi, 1996)
31		Oblivion 2: Backlash (Adventure, Comedy, Sci-Fi, 1996)
31		Back to the Future Part II (Adventure, Comedy, Sci-Fi, 1989)
31		The Nutty Professor (Comedy, Romance, Sci-Fi, 1996)
31		Multiplicity (Comedy, Romance, Sci-Fi, 1996)
31		Tremors (Comedy, Horror, Sci-Fi, 1990)
30		RocketMan (Comedy, Family, Sci-Fi, 1997)
30		Flubber (Comedy, Family, Sci-Fi, 1997)
30		Critters 2 (Comedy, Horror, Sci-Fi, 1988)
30		Return of the Killer Tomatoes! (Comedy, Horror, Sci-Fi, 1988)
30		Return of the Living Dead II (Comedy, Horror, Sci-Fi, 1988)
30		Remote Control (Comedy, Romance, Sci-Fi, 1988)
30		Not of This Earth (Comedy, Horror, Sci-Fi, 1988)
30		Killer Klowns from Outer Space (Comedy, Horror, Sci-Fi, 1988)
30		Back to the Future (Adventure, Comedy, Sci-Fi, 1985)
30		Purple People Eater (Comedy, Family, Sci-Fi, 1988)
30		Second Sight (Comedy, Mystery, Sci-Fi, 1989)
30		Deformed Monsters (Comedy, Sci-Fi, Horror, 1997)
30		Meet the Hollowheads (Comedy, Horror, Sci-Fi, 1989)
30		Sons of Steel (Comedy, Musical, Sci-Fi, 1988)
30		The Return of Swamp Thing (Sci-Fi, Horror, Comedy, 1989)
30		Hell Comes to Frogtown (Action, Comedy, Sci-Fi, 1988)
30		Alien Space Avenger (Comedy, Horror, Sci-Fi, 1989)
30		Double Team (Action, Comedy, Sci-Fi, 1997)
30		Dr. Caligari (Comedy, Horror, Sci-Fi, 1989)
30		Rising Storm (Action, Comedy, Sci-Fi, 1989)
30		Bride of Re-Animator (Comedy, Horror, Sci-Fi, 1989)
29		Nice Girls Don't Explode (Comedy, Romance, Sci-Fi, 1987)
29		Making Mr. Right (Comedy, Romance, Sci-Fi, 1987)
29		Nutty Professor II: The Klumps (Comedy, Romance, Sci-Fi, 2000)
29		Rocky Horror Show Live (Comedy, Musical, Sci-Fi, 2015)
29		My Favorite Martian (Comedy, Family, Sci-Fi, 1999)
29		Star Trek IV: The Voyage Home (Adventure, Comedy, Sci-Fi, 1986)
29		Galaxy Quest (Adventure, Comedy, Sci-Fi, 1999)
29		Project X (Comedy, Drama, Sci-Fi, 1987)
29		Top of the Food Chain (Comedy, Horror, Sci-Fi, 1999)
29		Night of the Creeps (Comedy, Horror, Sci-Fi, 1986)
29		Astronomy of Errors (Comedy, Romance, Sci-Fi, 2000)
29		The Pink Chiquitas (Comedy, Horror, Sci-Fi, 1987)
29		Acne (Comedy, Horror, Sci-Fi, 2000)
29		Bicentennial Man (Comedy, Drama, Sci-Fi, 1999)
29		Big Monster on Campus (Comedy, Horror, Sci-Fi, 2000)
29		TerrorVision (Comedy, Horror, Sci-Fi, 1986)
29		Short Circuit (Comedy, Family, Sci-Fi, 1986)
29		Monster in the Closet (Comedy, Horror, Sci-Fi, 1986)
29		Class of Nuke 'Em High (Comedy, Horror, Sci-Fi, 1986)
29		Real Men (Action, Comedy, Sci-Fi, 1987)
29		Chopping Mall (Comedy, Horror, Sci-Fi, 1986)
29		King Lear (Comedy, Drama, Sci-Fi, 1987)
29		Spaceballs (Adventure, Comedy, Sci-Fi, 1987)
29		Bad Taste (Comedy, Horror, Sci-Fi, 1987)
29		Interzone (Action, Comedy, Sci-Fi, 1987)

Notes: Movies similar to U.F.O., Movies like U.F.O., Comedy, Sci-Fi, Tony Dow, Roy 'Chubby' Brown, Sara Stockbridge, Amanda Symonds, Roger Lloyd Pack, SF, Science Fiction, SciFi, Sci Fi, Films, Video, Movie Similarities