| Movie | Role |
|---|---|
| Brother Bear (2003) | Kenai (voice) |
| Her (2013) | Theodore, Theodore Twombly |
| Inherent Vice (2014) | Larry "Doc" Sportello |
| We Own the Night (2007) | Bobby Green, Producer |
| Signs (2002) | Merrill Hess |
| Joker (2019) | Arthur Fleck, Arthur Fleck / Joker |
| The Master (2012) | Freddie Quell |
| Walk the Line (2005) | John R. Cash |
| Napoleon (2023) | Napoleon Bonaparte, Producer |
| Beau Is Afraid (2023) | Beau Wassermann |
| 8MM (1999) | Max California |
| Joker: Folie à Deux (2024) | Arthur Fleck |
| Gladiator (2000) | Commodus |