Filmography55 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2016 | The CrownSeries | Guardian Editor | 76 |
| 2012 | Casting ByMovie | Self | 72 |
| 2008 | LeverageSeries | Pierson | 68 |
| 2005 | Law & Order: Trial by JurySeries | Kurt Lascher | 65 |
| 2005 | Must Love DogsMovie | Walter | 65 |
| 2003 | Easy Riders, Raging Bulls: How the Sex 'n' Drugs 'n' Rock 'n' Roll Generation Saved HollywoodMovie | Self | 63 |
| 1998 | Naked City: Justice with a BulletMovie | Mickey Calvin | 58 |
| 1996 | Barb WireMovie | Foster | 56 |
| 1993 | A Home of Our OwnMovie | Narrator | 53 |
| 1991 | The Killing MindMovie | Thomas Quinn | 51 |
| 1987 | Less Than ZeroMovie | Bradford Easton | 47 |
| 1987 | Citizen SteveMovie | Self - Actor | 47 |
| 1985 | MoonlightingSeries | Scott Huntley | 45 |
| 1985 | Pee-wee's Big AdventureMovie | Terry Hawthorne | 45 |
| 1984 | Murder, She WroteSeries | Mark Lee Reynolds | 44 |
| 1983 | Running OutMovie | Paul Corsini | 43 |
| 1982 | St. ElsewhereSeries | Brian Whitehill | 42 |
| 1982 | HotelSeries | Mike | 42 |
| 1982 | Washington MistressMovie | Alan | 42 |
| 1981 | FreedomMovie | Richard | 41 |
| 1980 | Heart BeatMovie | Dick | 40 |
| 1980 | Portrait of an EscortMovie | Beau Simpson | 40 |
| 1978 | Are You in the House Alone?Movie | Neil Osborne | 38 |
| 1978 | With This RingMovie | Peter Turner | 38 |
| 1978 | The Initiation of SarahMovie | Paul Yates | 38 |
| 1977 | Having Babies IIMovie | Aaron Canfield | 37 |
| 1977 | What Really Happened to the Class of '65?Series | — | 37 |
| 1977 | Washington: Behind Closed DoorsSeries | Adam Gardiner | 37 |
| 1975 | ShampooMovie | Johnny Pope | 35 |
| 1975 | The Lion Roars AgainMovie | Self | 35 |
| 1972 | Haunts of the Very RichMovie | Lyle | 32 |
| 1970 | FlapMovie | Eleven Snowflake | 30 |
| 1969 | Castle KeepMovie | Lt. Amberjack | 29 |
| 1969 | Lanton MillsMovie | Mute | 29 |
| 1968 | Never a Dull MomentMovie | Florian | 28 |
| 1968 | How to Steal the WorldMovie | Steven Garrow | 28 |
| 1968 | Ice Station ZebraMovie | Lt. Russell Walker | 28 |
| 1966 | You're a Big Boy NowMovie | Raef del Grado | 26 |
| 1966 | Death of a SalesmanMovie | Biff | 26 |
| 1965 | BBC Play of the MonthSeries | Biff | 25 |
| 1965 | Run for Your LifeSeries | Charlie Carson | 25 |
| 1965 | BBC Play of the MonthSeries | Lee Harvey Oswald | 25 |
| 1965 | Marriage on the RocksMovie | Jim Blake | 25 |
| 1965 | The LonerSeries | Jody Merriman | 25 |
| 1965 | None But the BraveMovie | Air Crewman Keller | 25 |
| 1964 | Theatre 625Series | Grayson Hinks | 24 |
| 1964 | The Man from U.N.C.L.E.Series | Steve Garrow | 24 |
| 1963 | Bob Hope Presents the Chrysler TheatreSeries | Tony Pitts | 23 |
| 1963 | Mr. NovakSeries | Chris Herrod | 23 |
| 1963 | Soldier in the RainMovie | Jerry Meltzer | 23 |
| 1963 | Come Blow Your HornMovie | Buddy Baker | 23 |
| 1962 | The VirginianSeries | Clipper Ellis | 22 |
| 1961 | Ben CaseySeries | — | 21 |
| 1961 | Dr. KildareSeries | Thomas Hartwood | 21 |
| 1959 | BonanzaSeries | Charlie Two | 19 |