Edited sentence: , the television show within the film that Mark stars in, while Justin Long and Apatow regular Ken Jeong have cameos in the film as characters in movies within the film that George is famous for.Adam Sandler as George Simmons.Aubrey Plaza as Daisy Danby.Aziz Ansari as Randy Springs.Dave Attell, Sarah Silverman, Norm Macdonald, Paul Reiser, Tom Anderson, and Andy Dick filmed cameo appearances as themselves, who are acquainted with George.Eric Bana as Clarke.Jason Schwartzman as Mark Taylor Jackson.Jonah Hill as Leo Koenig.Leslie Mann as Laura.Owen Wilson and Elizabeth Banks are featured on posters for fake movies within the film that George starred in.RZA as Chuck.Rapper Eminem, comedian Ray Romano, musician James Taylor, MADtv member Nicole Parker, and newcomer Bo Burnham also appeared in small roles.Seth Rogen as Ira Wright.Torsten Voges as Dr.Undeclared alum Carla Gallo had a cameo in the film as a character on Yo Teach