Keeping Up with the Steins— Full Cast

Daryl Sabara

as Benjamin Fiedler

Jami Gertz

as Joanne Fiedler

Jeremy Piven

as Adam Fiedler

Cheryl Hines

as Casey Nudelman

Carter Jenkins

as Zachary Stein

Sandra Taylor

as Raylene Stein

Larry Miller

as Arnie Stein

Doris Roberts

as Rose Fiedler

Garry Marshall

as Irwin Fiedler

Daryl Hannah

as Sandy / Sacred

Britt Robertson

as Ashley Grunwald

Miranda Cosgrove

as Karen Sussman

Richard Benjamin

as Ken

Adam Goldberg

as Road Rage Driver

Bill O'Reilly

as Self