Joe Mantegna Will Girardi Actor Mary Steenburgen Helen Girardi Actor Amber Tamblyn Joan Girardi Actor Michael Welch Luke Girardi Actor Jason Ritter Kevin Girardi Actor Chris Marquette Guest Star Becky Wahlstrom Guest Star Aaron Himelstein Guest Star Mark Totty Guest Star Haylie Duff Guest Star Riley Smith Guest Star Kathryn Joosten Guest Star Jeff Licon Guest Star Sven Holmberg Guest Star will.i.am Guest Star Kevin Chapman Guest Star James DuMont Guest Star Barbara Hall Executive Producer James Hayman Executive Producer, Director Ellie Herman Writer Stephen Nathan Writer