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 - La nuova stirpe | 1990 | Daniel Clamp |
| Actor | Io e Annie | 1977 | Actor Boy Friend |
| Actor | RoboCop 2 | 1990 | Magnavolt Salesman |
| Actor | S.O.S. Fantasmi | 1988 | Bryce Cummings |
| Actor | Il seme della follia | 1994 | Saperstein |
| Actor | Payback - La rivincita di Porter | 1999 | Phil |
| Actor | Réalité | 2014 | Zog |
| Actor | Il sole a mezzanotte | 1985 | Wynn Scott |
| Actor | Brimstone | The Devil | |
| Actor | We Go On | 2016 | Dr. Ellison |
| Actor | Giulia | 1977 | Sammy |
| Actor | Sanitarium | 2013 | Gustav |
| Actor | Haunted History | Narrator | |
| Actor | The Lost Wife of Robert Durst | 2017 | Seymour Durst |
| Actor | Payback: Straight Up | 2006 | Phil |
| Actor | The Incredible Shrinking Woman | 1981 | Tom Keller |
| Actor | Masquerade | 1988 | Tony Gateworth |
| Actor | El Diablo | 1990 | The Preacher |
| Actor | A Little Sex | 1982 | Walter |
| Actor | Le stagioni dell'amore | 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 | Professione giustiziere | 1984 | Paul Briggs, U.S. Embassy |
| Actor | 52 gioca o muori | 1986 | Alan Raimy |
| Actor | David | 1988 | Charles Rothenberg |
| Actor | Il segno degli Hannan | 1979 | Richard Peabody |
| Actor | I giganti del West | 1980 | Nathan Wyeth |
| Actor | Search for Tomorrow | Billy Vargas |