Filmography
| Year | Title | Role | Notes |
|---|---|---|---|
| 1976 | Ritz, TheThe Ritz | Michael Brick | |
| 1976 | Marathon Man | Central Park Jogger (uncredited) | |
| 1976 | Deadly Hero | Billings | |
| 1976 | Eagle Has Landed, TheThe Eagle Has Landed | Captain Clark | |
| 1979 | Hair | George Berger | |
| 1979 | 1941 | Cpl. Chuck 'Stretch' Sitarski | |
| 1980 | Star Wars Episode V: The Empire Strikes Back | Echo Base Trooper (uncredited) | |
| 1980 | Why Would I Lie? | Cletus | |
| 1981 | Prince of the City | Daniel Ciello | |
| 1981 | Pursuit of D. B. Cooper, TheThe Pursuit of D. B. Cooper | D. B. Cooper | |
| 1983 | Neapolitan Sting | Ferdinando detto Giugiù | |
| 1984 | Once Upon a Time in America | James Conway O'Donnell | |
| 1984 | Flashpoint | Ernie Wyatt | |
| 1985 | Smooth Talk | Arnold Friend | |
| 1986 | Men's Club, TheThe Men's Club | Terry | |
| 1988 | Sweet Lies | Peter | |
| 1988 | Third Solution, TheThe Third Solution | Mark Hendrix | |
| 1988 | La notte degli squali | David Ziegler | |
| 1988 | Dead Heat | Det. Roger Mortis | |
| 1989 | Heart of Dixie | Hoyt Cunningham | |
| 1990 | Beyond the Ocean | ||
| 1993 | Where the Rivers Flow North | Champ's Manager | |
| 1994 | Hand Gun | George McCallister | |
| 1995 | Mister Dog | ||
| 1995 | Taming Power of the Small, TheThe Taming Power of the Small | Short film | |
| 1995 | Things to Do in Denver When You're Dead | Critical Bill | |
| 1996 | Mulholland Falls | Col. Nathan Fitzgerald | |
| 1996 | Phantom, TheThe Phantom | Xander Drax | |
| 1997 | Devil's Own, TheThe Devil's Own | Billy Burke | |
| 1998 | Deep Rising | John Finnegan | |
| 1999 | Deep End of the Ocean, TheThe Deep End of the Ocean | Pat Cappadora | |
| 2001 | Crash Point Zero | Agent Jason Ross | |
| 2001 | Critical Mass | Mike Jeffers | |
| 2001 | Skeletons in the Closet | Will | Video |
| 2001 | Venomous | Dr. David Henning | Video |
| 2002 | Gale Force | Sam Garrett | Video |
| 2002 | Hollywood Ending | Hal | |
| 2002 | Circle, TheThe Circle | Mr. Spencer Runcie | |
| 2005 | Miss Congeniality 2: Armed and Fabulous | FBI Asst. Dir. Walter Collins | |
| 2007 | Moola | Luis Gordon | |
| 2007 | Hideout, TheThe Hideout | Father Amy | |
| 2008 | What Happens in Vegas | Jack Fuller Sr. | |
| 2010 | Mask Maker | Mr. Tucker | |
| 2010 | Howl | Mark Schorer | |
| 2010 | 127 Hours | Aron's Dad | |
| 2010 | Martino's Summer | Capitano Jeff Clark | |
| 2011 | Little Bit of Heaven, AA Little Bit of Heaven | Jack Corbett | |
| 2011 | Oba: The Last Samurai | Col. Wessinger | |
| 2012 | Attack of the 50ft Cheerleader | Dr. Grey | |
| 2012 | Deadfall | Becker | |
| 2013 | Barefoot | Post-production |
| Year | Title | Role | Notes |
|---|---|---|---|
| 1984 | Streetcar Named Desire, AA Streetcar Named Desire | Stanley Kowalski | TV movie |
| 1985 | American Playhouse | Hudley T. Singleton III | Episode: "Some Men Need Help" |
| 1987 | J. Edgar Hoover | J. Edgar Hoover | TV movie |
| 1987 | Faerie Tale Theatre | Prince Andrew | Episode: "The Little Mermaid" |
| 1987 | Echoes in the Darkness | Rick Guida | TV miniseries |
| 1989 | Third Degree Burn | Scott Weston | TV movie |
| 1990 | Drug Wars: The Camarena Story | Ray Carson | TV miniseries |
| 1990 | Max and Helen | Max Rosenberg | TV movie |
| 1991 | Eddie Dodd | Eddie Dodd | 6 episodes |
| 1991 | Final Verdict | Earl Rogers | TV movie |
| 1992 | Till Death Us Do Part | Alan Palliko | TV movie |
| 1992 | Tales from the Crypt | Howard Prince | Episode: "None But the Lonely Heart" |
| 1992 | Water Engine, TheThe Water Engine | Dave Murray | TV movie |
| 1992 | Batman: The Animated Series | Dr. Archilles Milo (voice) | Episode: "Cat Scratch Fever" Episode: "Moon of the Wolf" |
| 1992 | Deadly Matrimony | Alan Masters | TV movie |
| 1993 | Bonds of Love | Robby Smith | TV movie |
| 1993 | Road to Avonlea | Zak Morgan | Episode: "Moving On" |
| 1993-1994 | Good Advice | Jack Harold | 19 episodes |
| 1994 | Vault of Horror I | TV movie | |
| 1994 | Parallel Lives | Peter Barnum | TV movie |
| 1994 | Texan | Man in Chinos | TV short |
| 1995 | In the Shadow of Evil | Jack Brenner | TV movie |
| 1995 | Johnny's Girl | Johnny | TV movie |
| 1996 | Late Shift, TheThe Late Shift | Michael Ovitz | TV movie |
| 1998 | Escape: Human Cargo | John McDonald | TV movie |
| 1998 | Substitute 2: School's Out, TheThe Substitute 2: School's Out | Karl Thomasson | TV movie |
| 1998 | Every Mother's Worst Fear | Mitch Carson (uncredited) | TV movie |
| 1999 | 36 Hours to Die | Noah Stone | TV movie |
| 1999 | Substitute: Winner Takes All, TheThe Substitute: Winner Takes All | Karl Thomasson | TV movie |
| 1999 | Journey to the Center of the Earth | Theodore Lytton | TV miniseries |
| 2000 | Hopewell | TV movie | |
| 2002 | UC: Undercover | Teddy Collins | Episode: "Teddy C" |
| 2002 | Guilty Hearts | Stephen Carrow | TV movie |
| 2002 | Going to California | Officer Terrence 'Terry' Miller | Episode: "The West Texas Round-up and Other Assorted Misdemeanors" |
| 2002-2006 | Everwood | Dr. Andrew 'Andy' Brown | Lead role |
| 2006 | Brothers & Sisters | David Morton | 4 episodes |
| 2007 | Staircase Murders, TheThe Staircase Murders | Michael Peterson | TV movie |
| 2007 | Heartland | Dr. Nathaniel 'Nate' Grant | 9 episodes |
| 2008 | Good Behavior | Burt Valencia | TV movie |
| 2008 | Front of the Class | Norman Cohen | TV movie |
| 2009 | Chasing a Dream | Gary Stiles | TV movie |
| 2009 | Safe Harbor | Doug | TV movie |
| 2009 | Storm, TheThe Storm | Robert Terrell | Episode: "The Storm: Part 1" Episode: "The Storm: Part 2" |
| 2010 | Boston's Finest | Jack Holt | TV movie |
| 2011 | Beyond the Blackboard | Dr. Warren | TV movie |
| 2011 | Against the Wall | Don Kowalski | 13 episodes |
| 2011 | Law & Order: Special Victims Unit | Jake Stanton | Episode: "Spiraling Down" |
| 2012 | Leverage | Pete Rising | Episode: " The Blue Line Job" |
| 2012 | White Collar | Sam Phelps | 3 episodes |
| 2013 | Eve of Destruction | TV miniseries, post-production |
| Year | Title | Role | Theatre |
|---|---|---|---|
| 1972–1980 | Grease | Danny Zuko | |
| 1974–1975 | Over Here! | Utah | |
| 1978 | Once in a Lifetime | Jerry Hyland | |
| 1981–1982 | Pirates of Penzance, TheThe Pirates of Penzance | The Pirate King | |
| 1982 | Some Men Need Help | Hudley T. Singleton III | 47th Street Theatre |
| 1989–1990 | Love Letters | Andrew Makepiece Ladd III | |
| 1989 | Bobby Gould in Hell | Bobby Gould | Mitzi E. Newhouse Theatre |
| 1992–1994 | Oleanna | John | Orpheum Theatre |
| 1999 | Captains Courageous, the Musical | Manuel | Manhattan Theatre Club |
| 2001 | Follies | Buddy Plummer |
Read more about this topic: Treat Williams