Paul Giamatti
Harvey Pekar
Judah Friedlander
Toby Radloff
James Urbaniak
Robert Crumb
Donal Logue
Stage Actor Harvey
Joyce Brabner
Joyce Brabner
Molly Shannon
Stage Actor Joyce
Cameron Carter
Green Lantern
Ebon Moss-Bachrach
MTV Director
David Letterman
Self (archive footage)
Kurt Loder
Self (archive footage)
Shari Springer Berman
Interviewer (voice)
Larry John Meyers
Throat Doctor
Sylvia Kauders
Old Jewish Lady
Nick Baxter
Mattress Guy #1
Allen Branstein
Mattress Guy #2
Dick Prochaska
WWII Patient
Robert Pulcini
Bob the Director
Bianca Santos
Counter Girl
Amy K. Harmon
Cheery Waitress
Terrence Sullivan
Letterman Regular
Jeff Peters
Talk Show Host
Robert J. Williams
Cancer Doctor
Jason Stevens
Letterman Regular (voice)
Todd Cummings
Talk Show Host (voice)
