He is best known as the co-director and co-writer of the Disney animated film Lilo & Stitch (alongside Chris Sanders) and the writer and director of DreamWorks Animation's How to Train Your Dragon film trilogy (the first film of which was also co-written and co-directed by Sanders).
Filmography:
- The Raccoons (1989): Assistant animator
- The Teddy Bears' Picnic (1989): Animator
- The Nutcracker Prince (1990): Assistant animator, layout artist
- Thumbelina (1994): Layout artist
- A Troll in Central Park (1994): Layout artist
- Mulan (1998): Co-head of story
- Atlantis: The Lost Empire (2001): Story artist
- Lilo & Stitch:
- Lilo & Stitch (2002): Co-writer, director
- Stitch! The Movie (2003): Credited for creating the Lilo & Stitch characters
- Lilo & Stitch: The Series (2003-2006): Credited for creating the Lilo & Stitch characters
- Lilo & Stitch 2: Stitch Has a Glitch (2005): Credited for creating the Lilo & Stitch characters
- Leroy & Stitch (2006): Credited for creating the Lilo & Stitch characters
- Heima (2007): Director, camera operator
- How to Train Your Dragon:
- How to Train Your Dragon (2010): Screenplay adaptation, director
- Gift of the Night Fury (2011): Executive producer
- How to Train Your Dragon 2 (2014): Director, screenplay, executive producer
- How to Train Your Dragon: The Hidden World (2019): Director, screenplay, executive producer
- Live action remake of the trilogy
(2025): Director, writer, producer
- Go Quiet (2010): Director, editor, camera operator
