Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | Taru sormusten herrasta: Sormuksen ritarit | 2001 | |
| Writer | Taru sormusten herrasta: Kuninkaan paluu | 2003 | |
| Writer | Taru sormusten herrasta: Kaksi tornia | 2002 | |
| Writer | Hobitti – Smaugin autioittama maa | 2013 | |
| Writer | Hobitti – Odottamaton matka | 2012 | |
| Writer | Hobitti – Viiden armeijan taistelu | 2014 | |
| Writer | Taru sormusten herrasta | 1978 | |
| Writer | The Hobbit | 1977 | |
| Writer | The Return of the King | 1980 | |
| Writer | The Hobbit | 1966 | |
| Writer | Born of Hope | 2009 | |
| Writer | The Fantastic Journey of Mr. Bilbo Baggins, the Hobbit | 1985 |