Michael Stuhlbarg
Larry Gopnik
Richard Kind
Uncle Arthur
Fred Melamed
Sy Ableman
Sari Lennick
Judith Gopnik
Aaron Wolff
Danny Gopnik
Jessica McManus
Sarah Gopnik
Peter Breitmayer
Mr. Brandt
Brent Braunschweig
Mitch Brandt
David Kang
Clive Park
Benjamin Portnoe
Danny's Reefer Buddy
Jack Swiler
Boy on Bus
Andrew S. Lentz
Cursing Boy on Bus
Jon Kaminski Jr.
Mike Fagle
Ari Hoptman
Arlen Finkle
Alan Mandell
Rabbi Marshak
Amy Landecker
Mrs. Samsky
George Wyner
Rabbi Nachtner
Michael Tezla
Dr. Sussman
Katherine Borowitz
Friend at the Picnic
Steve Park
Clive's Father
Allen Lewis Rickman
Shtetl Husband
Yelena Shmulenson
Shtetl Wife
Fyvush Finkel
Dybbuk?
Ronald Schultz
Hebrew School Teacher
Raye Birk
Dr. Shapiro
Jane Hammill
Larry's Secretary
Claudia Wilkens
Marshak's Secretary
Simon Helberg
Rabbi Scott
Adam Arkin
Divorce Lawyer
James Cada
Cop #1
Michael Lerner
Solomon Schlutz
Charles Brin
Hebrew School Principal
Michael Engel
Torah Blesser
Tyson Bidner
Magbiah
Phyllis Harris
Hebrew School Tea Lady
Piper Sigel-Bruse
D'vorah
Hannah Nemer
Sarah's Friend
Rita Vassallo
Law Firm Secretary
Warren Keith
Dick Dutton (voice)
Neil Newman
Cantor
Tim Russell
Detective #1
Jim Lichtscheidl
Detective #2
Wayne A. Evenson
Russell Krauss
Scott Thompson Baker
Sci-Fi Movie Hero
Landyn Banx
Physics Student (uncredited)
Punnavith Koy
Physics Nerd (uncredited)
Joel Thingvall
Bar Mitzvah Guest (uncredited)
Amanda Day
Physics Student (uncredited)