Rob Reiner Artie Director, Actor, Producer Michael Douglas Oren Little Actor Diane Keaton Leah Actor Sterling Jerins Sarah Actor Frances Sternhagen Claire Actor Maurice Jones Ray Actor Andy Karl Ted Actor Austin Lysy Kyle Actor Annie Parisse Kate Actor Scott Shepherd Luke Actor Frankie Valli Victor Salducii Actor Michael Terra Peter Actor Sawyer Tanner Simpkins Dylan Actor Maxwell Simpkins Caleb Actor Luke Robertson Jason Actor Meryl Jones Williams Rita Actor Mark Andrus Screenwriter Liz Glotzer Executive Producer Jared Goldman Executive Producer Ron Lynch Executive Producer Andrew Scheinman Executive Producer Martin Shafer Executive Producer Tamara Birkemoe Executive Producer Grant Cramer Executive Producer Shaun Redick Executive Producer Raymond Mansfield Executive Producer Vitaly Grigoriants Executive Producer Remington Chase Executive Producer Stepan Martirosyan Executive Producer Alan Greisman Producer Mark Damon Producer Reed Morano Cinematographer Ethan Tobman Production Design Dorian Harris Film Editor Marc Shaiman Original Music Laura Rosenthal Casting Leah Katznelson Costume Designer