P.S.— Full Cast

Laura Linney

as Louise Harrington

Gabriel Byrne

as Peter Harrington

Lois Smith

as Ellie Silverstein

Paul Rudd

as Sammy Silverstein

Topher Grace

as F. Scott Feinstadt

Jennifer Carta

as Work Study

Becki Newton

as Rebecca

Chris Meyer

as Ricky

Marcia Gay Harden

as Missy Goldberg

Stacy Lynn Spierer

as Student (uncredited)