Actor
- Cat Tale (2010) .... Rover (voice)
- Demoted (2009) .... Mike
- Stay Cool (2009) .... Big Girl
- Special Agent Oso Hide Another Day (2009) .... Oso (voice)
- Special Agent Oso Live and Jump Rope (2009) .... Oso (voice)
- Special Agent Oso For Show and Tell Only/Piggy Bank Royale (2009) .... Special Agent Oso
- Forever Strong (2008) .... Marcus
- Spirit of the Forest (2008) .... Furi (voice)
- AFI's 10 Top 10 (2008) .... Himself
- The Colour of Magic (2008) .... Twoflower
- Borderland (2007) .... Randall
- Icebreaker (2007) .... Matt Foster
- The Final Season (2007) .... Kent Stock
- My Wife Is Retarded (2007) .... Jeff
- What Love Is (2007) .... George
- My Name Is Earl Get a Real Job (2007) .... Rick
- Meerkat Manor The Mission (2007) .... Narrator (voice)
- Meerkat Manor On Dangerous Ground (2007) .... Narrator (voice)
- Meerkat Manor Sibling Rivalry (2007) .... Narrator (voice)
- Meerkat Manor The Tale of Len & Squiggy (2007) .... Narrator (voice)
- Meerkat Manor Journey's End (2007) .... Narrator (voice)
- Meerkat Manor Heavy the Crown (2007) .... Narrator (voice)
- Meerkat Manor A New Day (2007) .... Narrator (voice)
- Meerkat Manor Farewell, My Lovely (2007) .... Narrator (voice)
- Meerkat Manor Three Degrees of Separation (2007) .... Narrator (voice)
- Meerkat Manor The Graduate (2007) .... Narrator (voice)
- Meerkat Manor A Family at War (2007) .... Narrator (voice)
- Monk Mr. Monk Is at Your Service (2007) .... Paul Buchanan
- Meerkat Manor The Death of Romance (2007) .... Narrator (voice)
- Meerkat Manor Sister Act (2007) .... Narrator (voice)
- Click (2006) .... Bill
- AFI's 100 Years... 100 Cheers: America's Most Inspiring Movies (2006) .... Himself
- Astérix et les Vikings (2006) .... Justforkix (voice: English version)
- Marilyn Hotchkiss Ballroom Dancing & Charm School (2006) .... Kip Kipling
- Thanks to Gravity (2006) .... Coach Amal
- American Men (2006) ....
- 24 Day 5: 3:00 p.m.-4:00 p.m. (2006) .... Lynn McGill
- 24 Day 5: 10:00 a.m.-11:00 a.m. (2006) .... Lynn McGill
- 24 Day 5: 2:00 p.m.-3:00 p.m. (2006) .... Lynn McGill
- 24 Day 5: 1:00 p.m.-2:00 p.m. (2006) .... Lynn McGill
- 24 Day 5: 12:00 p.m.-1:00 p.m. (2006) .... Lynn McGill
- 24 Day 5: 11:00 a.m.-12:00 p.m. (2006) .... Lynn McGill
- 24 Day 5: 6:00 p.m.-7:00 p.m. (2006) .... Lynn McGill
- 24 Day 5: 5:00 p.m.-6:00 p.m. (2006) .... Lynn McGill
- 24 Day 5: 4:00 p.m.-5:00 p.m. (2006) .... Lynn McGill
- 24 Day 5: 7:00 p.m.-8:00 p.m. (2006) .... Lynn McGill
- Hercules (2005) .... Linus
- Ringers: Lord of the Fans (2005) .... Himself
- Bigger Than the Sky (2005) .... Ken Zorbell
- Slipstream (2005) .... Stuart Conway
- Smile (2005) .... Mr. Matthews
- Meerkat Manor (2005) .... Narrator / ... (14 episodes, 2007)
- 101 Most Unforgettable SNL Moments (2004) .... Himself / Commentator (archive footage)
- Elvis Has Left the Building (2004) .... Aaron
- E! Special: Famous Last Names (2004) .... Himself
- Party Wagon (2004) .... Randall P. McDuff / Josiah (voice)
- DNZ: The Real Middle Earth (2004) .... Himself (archive footage)
- 50 First Dates (2004) .... Doug Whitmore
- California Sea Lions (2004) .... Narrator (voice)
- Film Trix 2004 (2004) .... Himself
- Reel Comedy: 50 First Dates (2004) .... Himself
- Jeremiah The State of the Union (2004) .... Mister Smith
- Celebrity Poker Showdown Tournament 2, Game 4 (2004) .... Himself
- Las Vegas You Can't Take It with You (2004) .... Lloyd Campbell
- The Lord of the Rings: The Quest Fulfilled (2003) .... Himself
- The Lord of the Rings: The Return of the King (2003) .... Sam
- National Geographic: Beyond the Movie - The Lord of the Rings: Return of the King (2003) .... Himself
- 100 Years of Hope and Humor (2003) .... Himself
- Jeremiah Strange Attractors (2003) .... Mister Smith
- Jeremiah Crossing Jordan (2003) .... Mister Smith
- Jeremiah Running on Empty (2003) .... Mister Smith
- Jeremiah Voices in the Dark (2003) .... Mister Smith
- Jeremiah Rites of Passage (2003) .... Mister Smith (credit only)
- Jeremiah Deus Ex Machina (2003) .... Mister Smith
- The Lord of the Rings: The Two Towers (2002) .... Sam
- Jeremiah (2002) .... Mister Smith (15 episodes, 2003-2004)
- Making the Movie (2002) .... Himself
- The Lord of the Rings: The Fellowship of the Ring (2001) .... Sam Gamgee
- Quest for the Ring (2001) .... Himself / Samwise 'Sam' Gamgee
- The Sky Is Falling (2001) .... Mr. Schwartz
- National Geographic: Beyond the Movie - The Lord of the Rings (2001) .... Himself / Samwise 'Sam' Gamgee
- Deterrence (2000) .... Ralph
- The Last Producer (2000) .... Bo Pomerantz
- Kimberly (1999) .... Bob
- Bulworth (1998) .... Gary
- Boy Meets Girl (1998) .... Mike
- Total Request Live (1998) .... Himself (2 episodes, 2001-2003)
- The Long Way Home (1997) .... Earl G. Harrison, Commissioner of Immigration and Naturalization (voice)
- The Low Life (1996) .... Andrew
- Courage Under Fire (1996) .... Patella
- Harrison Bergeron (1995) .... Harrison Bergeron
- Teresa's Tattoo (1995) .... Step-Brother (uncredited)
- Road Warriors (1995) .... Ted Kincaid (unconfirmed)
- Safe Passage (1994) .... Izzy Singer
- Rudy (1993) .... Daniel E. 'Rudy' Ruettiger
- Where the Day Takes You (1992) .... Greg
- Encino Man (1992) .... Dave Morgan
- Toy Soldiers (1991) .... William 'Billy' Tepper
- The Willies (1991) .... Michael
- Memphis Belle (1990) .... Sgt. Richard "Rascal" Moore
- The War of the Roses (1989) .... Josh at 17
- Staying Together (1989) .... Duncan McDermott
- Like Father Like Son (1987) .... Clarence / Trigger
- White Water Summer (1987) .... Alan
- The B.R.A.T. Patrol (1986) .... Leonard Kinsey
- The Goonies (1985) .... Mikey Walsh
- The O'Briens (1985) .... The Son
- The Making of 'The Goonies' (1985) .... Himself
- The Rules of Marriage (1982) .... Charlie Hagen
- Please Don't Hit Me, Mom (1981) .... Brian Reynolds
- The Long and Short of It (2003) ....
- Angel Soulless (2003) ....
- 100 Deeds for Eddie McDowd (1999) .... (unknown episodes)
- Perversions of Science (1997) .... (unknown episodes)
- Kangaroo Court (1994) ....
- On My Honor (1988) ....
- The Final Season (2007) .... executive producer
- Slipstream (2005) .... co-producer
- The Long and Short of It (2003) .... producer
- Kangaroo Court (1994) .... producer
- On My Honor (1988) .... producer
- The Long and Short of It (2003) .... screenplay


