Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Actor | Shazam! | 2019 | Mr. Sivana |
| Actor | Smallville | Lionel Luthor | |
| Actor | Batman (1992) | Edward Nygma / The Riddler | |
| Actor | Batman & Robin | 1997 | Dr. Jason Woodrue |
| Actor | Gremlins 2 - Die Rückkehr der kleinen Monster | 1990 | Daniel Clamp |
| Actor | Der Stadtneurotiker | 1977 | Actor Boy Friend |
| Actor | RoboCop 2 | 1990 | Magnavolt Salesman |
| Actor | Die Geister, die ich rief... | 1988 | Bryce Cummings |
| Actor | Die Mächte des Wahnsinns | 1994 | Saperstein |
| Actor | Payback - Zahltag | 1999 | Phil |
| Actor | Reality | 2014 | Zog |
| Actor | White Nights - Nacht der Entscheidung | 1985 | Wynn Scott |
| Actor | Brimstone | The Devil | |
| Actor | We Go On | 2016 | Dr. Ellison |
| Actor | Julia | 1977 | Sammy |
| Actor | Sanitarium | 2013 | Gustav |
| Actor | Geister der Vergangenheit | Narrator | |
| Actor | The Lost Wife of Robert Durst | 2017 | Seymour Durst |
| Actor | Payback - Straight Up | 2006 | Phil |
| Actor | Die unglaubliche Geschichte der Mrs. K. | 1981 | Tom Keller |
| Actor | Masquerade - Ein tödliches Spiel | 1988 | Tony Gateworth |
| Actor | El Diablo - Der mit dem Teufel tanzt | 1990 | The Preacher |
| Actor | A Little Sex | 1982 | Walter |
| Actor | Liebe! Stärke! Mitgefühl! | 1997 | John & James Jeckyll |
| Actor | The Chocolate War | 1988 | Brother Leon |
| Actor | Shadows of the Bat: The Cinematic Saga of the Dark Knight - Batman Unbound | 2005 | John Glover |
| Actor | Der Liquidator | 1984 | Paul Briggs, U.S. Embassy |
| Actor | 52 Pick-Up | 1986 | Alan Raimy |
| Actor | David | 1988 | Charles Rothenberg |
| Actor | Tödliche Umarmung | 1979 | Richard Peabody |
| Actor | Duell am Wind River | 1980 | Nathan Wyeth |
| Actor | Search for Tomorrow | Billy Vargas |