Alec Baldwin Theodore Templeton (voice) James Marsden Tim Templeton (voice) Amy Sedaris Tina Templeton (voice) Jeff Goldblum Dr. Armstrong (voice) Eva Longoria Carol Templeton (voice) Lisa Kudrow Janice Templeton (voice) Jimmy Kimmel Ted Templeton (voice) Ariana Greenblatt Tabitha Templeton (voice) James McGrath Wizzie (voice) Raphael Alejandro Nathan (voice) Ashlyn Lundahl 'No' Girl (voice) Tom McGrath Dr. Tiffany Hamilton (voice) Walt Dohrn Baby Bouncer (voice) Miles Bakshi Young Tim Voice-Over (voice)