Howl
James Franco character Allen Ginsberg
Jon Hamm character Jake Ehrlich
Mary-Louise Parker character Gail Potter
Treat Williams character Mark Schorer
Jeff Daniels character Professor David Kirk
David Strathairn character Ralph McIntosh
Alessandro Nivola character Luther Nichols
Aaron Tveit character Peter Orlovsky
Bob Balaban character Judge Clayton Horn
Allen Ginsberg character Himself
Sean Patrick Reilly character Six Gallery
Jon Prescott character Neal Cassady
Todd Rotondi character Jack Kerouac
Alex Emanuel character Six Gallery
Cecilia Foss character Beatnik Poet