- Saturday Night Live (various, 1984)
- The Breakfast Club (writer, 1985)
- Wise Guys (writer, 1986)
- Mannequin (writer, 1987)
- Beetlejuice (writer, 1988)
- Heartburn (writer, 1986)
- The Prince of Tides (script doctor, 1991)
- Love Potion No. 9 (writer, 1992)
- The Thing Called Love (writer, 1993)
- The Pagemaster (writer, 1994)
- Dunston Checks In (writer, 1996)
- Doctor Dolittle (writer, 1998)
- Dr. Seuss' How the Grinch Stole Christmas (writer, 2000)
- Scooby-Doo (writer, 2002)
- Garfield: The Movie (writer, 2004)
- Garfield: A Tail of Two Kitties (writer, 2006)
- Horton Hears a Who! (writer, 2008)
- Cats & Dogs: The Revenge of Kitty Galore (writer, 2010)
- The Smurfs (writer, 2011)
- The Smurfs 2 (writer, 2013)
Television:
- Saturday Night Live (writer, 1975-1980)
- Taxi (writer, 1978-1981)
- The Chevy Chase Show (writer, 1976)
- The Associates (writer, 1979-1980)
- Square Pegs (writer, 1982-1983)
- The Big Easy (writer, 1996-1997)
- The Naked Truth (writer, 1995-1997)
- King of the Hill (writer, 1999)
- Futurama (writer, 2000)
- The Simpsons (writer, 2001)
- Family Guy (writer, 2005)
- American Dad! (writer, 2005)
- Drawn Together (writer, 2006)
- The Cleveland Show (writer, 2009-2013)
- Bob's Burgers (writer, 2011-2017)