Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | Dr. Seltsam oder: Wie ich lernte, die Bombe zu lieben | 1964 | |
| Writer | Easy Rider | 1969 | |
| Writer | Barbarella | 1968 | |
| Writer | Cincinnati Kid | 1965 | |
| Writer | Magic Christian | 1969 | |
| Writer | Magic Christian | 1969 | |
| Writer | Die nackten Tatsachen | 1967 | |
| Writer | Tod in Hollywood | 1965 |