Peter Killian Gallagher (born August 19, 1955) is an American actor. He is best known for his roles in the films Sex, Lies, and Videotape (1989), American Beauty (1999), and Palm Springs (2020).

Filmography

• Everybody's Live with John Mulaney — Future John Mulaney
• 2024Humane — Charles York
• Reboot — Tyler
• Mr. Mayor — Brett (uncredited)
• 2021One December Night — Mike
• 2021Zoey's Extraordinary Christmas — Mitch Clarke
• 2020Palm Springs — Howard
• The Owl House — Del Clawthorne (voice)
• Zoey's Extraordinary Playlist — Mitch Clarke
• 2019After — Ken Scott
• 2019Stepdaddy
• Truth Be Told — Andrew Finney
• 2018Submission — Len
• The Conners — Brian Foster
• 2017A Bad Moms Christmas — Hank
• 2017Literally, Right Before Aaron — Orson Schwartzman
• The Gifted — Benedict Ryan
• 2016Center Stage: On Pointe — Jonathan Reeves
• 2016Cruel Intentions — Edward Valmont
• 2015DeTour — Professor Zaring
• Grace and Frankie — Nick Skolka
• 2015Hello, My Name Is Doris — Willy Williams
• 2015In a Relationship — The Interviewer (voice)
• Man Seeking Woman — Joel Greenberg
• Togetherness — Larry
• 2012Someday This Pain Will Be Useful to You — Paul Sveck
• 2012Step Up Revolution — Bill Anderson
• New Girl — Gavin
• Whitney — Vince
• 2010Burlesque — Vince Scali
• 2010Conviction — Barry Scheck
• Covert Affairs — Arthur Campbell
• 2010GasHole — Narrator (voice)
• 2009Adam — Marty Buchwald
• The Good Wife — Ethan Carver
• 2009The War Boys — Slater
• 2008Center Stage: Turn It Up — Jonathan Reeves
• Californication — Dean Stacy Koons
• The Gathering — Dr. Michael Foster
• Shark — Frank Bell
• Grey's Anatomy — David Hamilton
• How I Met Your Mother — Professor Vinick
• 2004Broadway's Lost Treasures II — Sky Masterson (segment "Guys & Dolls")
• 2003A Tale of Two Wives — Bill Goodman
• 2003How to Deal — Len Martin
• 2003The Adventures of Tom Thumb and Thumbelina — The Mole King (voice)
• The O.C. — Sandy Cohen
• 2002Mr. Deeds — Chuck Cedar
• Page to Screen
• 2002Page to Screen: 'The Silence of the Lambs' — Host
• 2001Feast of All Saints — Philippe Ferronaire
• 2001Perfume — Guido
• 2001Protection — Ted
• 2000Center Stage — Jonathan Reeves
• 2000Cupid & Cate — Harry
• 2000Jesus Christ Superstar — First Priest
• 2000Other Voices — Jordin
• 2000The Last Debate — Tom Chapman
• 1999American Beauty — Buddy Kane
• 1999Brotherhood of Murder — Bob Matthews
• Family Guy — Jared (voice)
• 1999House on Haunted Hill — Donald W. Blackburn, M.D.
• Law & Order: Special Victims Unit — William Dodds
• 1998Brave New World — Bernard Marx
• 1998Johnny Skidmarks — Johnny Scardino
• The Secret Lives of Men
• 1998Virtual Obsession — Dr. Joe Messenger
• 1997Cafe Society — Jack Kale
• 1997Path to Paradise: The Untold Story of the World Trade Center Bombing — John Anticev
• 1997The Man Who Knew Too Little — James Ritchie
• 1997The Trial of Adolf Eichmann — Gideon Hausner (voice)
• 1996Last Dance — John Hayes
• Superman: The Animated Series — Kurt (voice)
• 1996The Great Irish Famine — narrator
• Titanic — Wynn Park
• 1996To Gillian on Her 37th Birthday — David Lewis
• 1995The Underneath — Michael Chambers
• 1995While You Were Sleeping — Peter Callaghan
• 1994Mrs. Parker and the Vicious Circle — Alan Campbell
• 1994The Hudsucker Proxy — Vic Tenetta
• 1994White Mile — Jack Robbins
• Fallen Angels — Mitch Allison, Dr. Yorgrau
• Homicide: Life on the Street — Chris Rawls
• 1993Malice — Atty. Dennis Riley
• 1993Mother's Boys — Robert Madigan
• 1993Short Cuts — Stormy Weathers
• 1993Watch It — John
• 1992Bob Roberts — Dan Riley
• 1992Buying a Landslide — Philip Kautsky
• 1992The Player — Larry Levy
• An Inconvenient Woman — Philip Quennell
• 1991Late for Dinner — Bob Freeman
• 1991Milena — Pollak
• 1991The Cabinet of Dr. Ramirez — Matt, Story
• 1990Love and Lies — David West
• 1990Tune in Tomorrow... — Richard Quince
• 1989sex, lies, and videotape — John Mullany
• 1988High Spirits — Brother Tony
• 1988I'll Be Home for Christmas — Aaron Copler
• 1988The Caine Mutiny Court-Martial — Lt. Cmdr. John Challee
• The Murder of Mary Phagan — Leo Frank
• 1987Long Day's Journey Into Night — Edmund Tyrone
• 1986My Little Girl — Kai
• 1985Dreamchild — Jack Dolan
• 1984Terrible Joe Moran — Nick
• American Playhouse — Logan Melton, Charles Castle
• 1982Summer Lovers — Michael Pappas
• 1980Skag — John Skagska
• Skag
• 1980The Idolmaker — Caesare
• Hallmark Hall of Fame — Harry
• Cruel Intentions — Edward Valmont

Appearances as themselves (28)

• 2026TOVAH — Self
• 2022The Day the Music Died: The Story of Don McLean's "American Pie" — Self
• 2020One Night Only: The Best of Broadway — Self
• Stars in the House — Self
• The Tamron Hall Show — Self - Guest
• 2018Something in the Air: Making "sex, lies, and videotape" — Self
• The Megan Mullally Show — Self - Guest
• The Late Late Show with Craig Ferguson — Self
• On Air with Ryan Seacrest — Self - The O.C.
• The Tony Danza Show — Self
• 2003Comedy Central Roast of Denis Leary — Self
• Comedy Central Roasts — Self
• The Ellen DeGeneres Show — Self - Guest
• 2002Magic Time: A Tribute to Jack Lemmon — Self
• Good Day Live — Self
• 2001My Favorite Broadway: The Love Songs — Self
• 2000American Beauty: Look Closer... — Self
• The View — Self
• 1996Cannes Man — Self
• 1994Everybody Just Stay Calm — Self
• Late Night with Conan O'Brien — Self - Guest
• 1993Luck, Trust & Ketchup: Robert Altman in Carver Country — Self
• 1992Guys and Dolls: Off the Record — Himself / Sky Masterson
• 1992Robert Altman's Players — Self
• LIVE with Kelly and Mark — Self
• Tony Awards — Self - Performer
• Broadway: The Next Generation — Self
• New Line: Independent Legacies — Self (archive footage)