- Ben Falcone - Howard
- Ray Parker, Jr. - Himself
- Sarah Baker - Jennifer
- Echo Kellum - Joseph
- Hunter Payton - Young Andrew
- Colin McGurk - Barista
- John Gabriel Rodriquez - Mike
- Lea Thompson - Lea Thompson
- Nancy Friedrich - Nancy
- Maggie Beal - Young Zelda
- Celeste Cook - Theatre Patron
- Chelsey Crisp - Brooke
- Patrick Carlyle - Sage
- Jensen Atwood - Curt
- Exie Booker - Lt Taylor
- Zack Duhame - Officer
- Christian Gehring - Gustav
- Maurice Warfield - Husband
- Toby Huss - Uncle Dave
- Wayne Wilderson - Dane
- Sally Dworsky - Guest
- Trevor Larcom - Young Stu
- Mindy Sterling - Aunt Jo
- Henry T. Yamada - Cousin Beezy
- Eric Normington - Bartender
- Eric Normington - Coffee Cart Guy
- Vivian Bang - Emily Sloninsky
- Steve Trzaska - Silent Arnold
- Americus Abesamis - Doorman
- Guerrin Gardner - Sexy Nurse
- Josh Casaubon - Frank
- Josh Meyers - Chad
- Jessie Graff - Abe Lincoln
- Emily Arlook - Key
- J. Rene Pena - Registration Woman
- Sasha Wexler - Gina
- Marina Anderson - Gina's mom
- Elke Berry - Greta
- Alex Wyse - Jordan
- Tyler Cook - Handsome Guy
- Elle Alexander - Stair Climber
- Andy Favreau - Bruno
- Eddie Alfano - Xavier
- Hunter Womack - Maintenance Guy
- Rebecca Rowley - Bartender (2014)
- Taji Coleman - Mom
- Amy Okuda - Becky
- Hal Devi - Bouncer
- Darren Dupree Washington - Cop
- Nate Shelkey - Apartment Manager
- Dan Lauria - Pete
- Steve Agee - Lewis
- Brian Shakti - Bobby
- Dreama Walker - Madeline
- Patrick Heusinger - Jay
- Will McCormack - Kurtz
- Rashida Jones - Whalen
Ben Feldman hace el papel de Andrew.
Cristin Milioti hace el papel de Zelda.
Henry Zebrowski interpreta a Stu en la serie.
Lenora Crichlow interpreta a Stephie en la serie.
Christina Kirk interpreta a Lydia "Big Bird" en la serie.
Katey Sagal interpreta a Narrator en la serie.
Parvesh Cheena interpreta a Dinesh en la serie.
Hong Chau hace el papel de Lora.
Nancy Friedrich hace el papel de Nancy.
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