Superman/Batman: Public Enemies 2009
Screenplay
Justice League: The New Frontier 2008
Writer
Power Rangers S.P.D.: Zapped 2005
Writer
Batman Beyond: The Movie 1999
Writer
The Batman/Superman Movie: World's Finest 1997
Screenplay
Street Corner Justice 1996
Writer
T.J. Hooker: Blood Sport 1986
Writer
Nostalgic Tomorrow: A Batman Gathering 2019
as Self
A League of One: The Dwayne McDuffie Story 2012
Actor
Above, Beneath and Beyond the Valley: The Making of a Musical-Horror-Sex-Comedy 2006
as Self
Credits from TMDB.