[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/dennis_dugan.jpg]]

Dennis Barton Dugan (born September 5, 1946 in Wheaton, Illinois) is an American actor, director, and comedian. He is best known for his numerous collaborations with Creator/AdamSandler, which created some (in)famous movies, such as ''Film/GrownUps'' and ''Film/JackAndJill''.

His movies, despite many being commercially successful, are often the scratching posts for critics. Nearly all of his films have turned out to be "rotten" on Website/RottenTomatoes, with his best-received movie there, ''Film/HappyGilmore'', earning a barely "fresh" score of 61%.

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!!Acting filmography on this wiki:
* ''Film/TheHospital'' (1971)
* ''Film/NightCallNurses'' (1972)
* ''Series/TheModSquad'', 1 episode (1973)
* ''Series/LoveAmericanStyle'', 1 episode (1973)
* ''Series/TheWaltons'', 1 episode (1973)
* ''Series/{{Cannon}}'', 1 episode (1974)
* ''Film/NightMoves'' (1975)
* ''Film/{{Smile|1975}}'' (1975)
* ''Film/TheDayOfTheLocust'' (1975)
* ''Series/{{MASH}}'', 2 episodes (1975, 1983)
* ''Series/{{Columbo}}'', episode "[[Recap/ColumboS05E06 Last Salute to the Commodore]]" (1976)
* ''Series/{{Alice|1976}}'', {{Pilot}} (1976)
* ''Series/TheRockfordFiles'', 2 episodes (1978–79)
* ''Series/{{Supertrain}}'', 1 episode (1979)
* ''Film/{{The Howling|1981}}'' (1981)
* ''Series/ItsALiving'', 1 episode (1981)
* ''Series/HillStreetBlues'', 4 episodes (1982)
* ''Series/StElsewhere'', 1 episode (1985)
* ''Series/ShadowChasers'' (1985–86)
* ''Film/CantBuyMeLove'' (1987)
* ''Series/{{Moonlighting}}'', 4 episodes (1988–89)
* ''Film/{{Parenthood}}'' (1989)
* ''Series/LALaw'', 1 episode (1993)

!!Directing filmography on this wiki:
* ''Series/{{Hunter|1984}}'', 2 episodes (1987)
* ''Series/{{Wiseguy}}'', 1 episode (1988)
* ''Series/{{Moonlighting}}'', 5 episodes including the SeriesFinale (1988–89)
* ''Film/ProblemChild'' (1990)
* ''Film/BrainDonors'' (1992)
* ''Series/DoogieHowserMD'', 1 episode (1993)
* ''Series/LALaw'', 2 episodes (1993–94)
* ''Series/NYPDBlue'', 6 episodes (1993–2004)
* ''Series/{{Columbo}}'', episode "[[Recap/ColumboS10E08 Butterfly in Shades of Grey]]" (1994)
* ''Series/PicketFences'', 2 episodes (1994–95)
* ''Series/ChicagoHope'', 1 episode (1995)
* ''Film/HappyGilmore'' (1996)
* ''Film/BeverlyHillsNinja'' (1997)
* ''Series/AllyMcBeal'', 1 episode (1998)
* ''Film/BigDaddy'' (1999)
* ''Series/ShastaMcNasty'', 4 episodes (1999)
* ''Film/SavingSilverman'' (2001)
* ''Film/NationalSecurity'' (2003)
* ''Series/HopeAndFaith'', 2 episodes (2005)
* ''Film/TheBenchwarmers'' (2006)
* ''Film/INowPronounceYouChuckAndLarry'' (2007)
* ''Film/YouDontMessWithTheZohan'' (2008)
* ''Film/GrownUps'' (2010)
* ''Film/JustGoWithIt'' (2011)
* ''Film/JackAndJill'' (2011)
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