Josh Radnor Jesse Director, Actor, Screenwriter, Producer Elizabeth Olsen Zibby Actor Richard Jenkins Peter Actor Allison Janney Judith Actor John Magaro Dean Actor Elizabeth Reaser Ana Actor Zac Efron Nat Actor Kate Burton Susan Actor Robert Desiderio David Actor Ali Ahn Vanessa Actor Brice Dal Farra Producer Claude Dal Farra Producer Lauren Munsch Producer Jesse Hara Producer Peter Graham Executive Producer Stephen Hays Executive Producer Paul Prokop Executive Producer Seamus Tierney Cinematographer Michael R. Miller Film Editing Ben Toth Original Music Jade Healy Production Design Scott Kuzio Art Director, Set Decoration Deborah Newhall Costume Design Suzanne Smith Casting