Seth Rogen character Ben Stone
Katherine Heigl character Alison Scott
Leslie Mann character Debbie
Paul Rudd character Pete
Jason Segel character Jason
Jay Baruchel character Jay
Jonah Hill character Jonah
Martin Starr character Martin
Maude Apatow character Sadie
Iris Apatow character Charlotte
Harold Ramis character Ben's Dad
Alan Tudyk character Jack
Kristen Wiig character Jill
Bill Hader character Brent
Craig Robinson character Club Doorman
Charlyne Yi character Jodi
Ken Jeong character Doctor Kuni
B.J. Novak character Young Doctor
Catherine Reitman character Alison's Friend
Brianna Brown character Alison's Friend
Adam Scott character Samuel
Ana Mercedes character Maria
Mo Collins character Female Doctor
Tim Bagley character Dr. Pellagrino
Melinda Bennett character Dr. Pellagrino's Nurse
Paul Feig character Fantasy Baseball Guy
Nautica Thorn character Lap Dancer
Stormy Daniels character Lap Dancer
Tami Sagher character Wardrobe Lady
Jessica Alba character Herself (uncredited)
Steve Carell character Himself (uncredited)
Andy Dick character Himself (uncredited)
James Franco character Himself (uncredited)
Eva Mendes character Herself (uncredited)
Ryan Seacrest character Himself (uncredited)
Dax Shepard character Himself (uncredited)
Michelle Woods character Waitress (uncredited)
