I am Sam (2001) - Cast

Sean Penn as Sam Dawson
Michelle Pfeiffer as Rita Harrison
Dakota Fanning as Lucy Diamond Dawson
Doug Hutchison as Ifty
Stanley DeSantis as Robert
Brad Silverman as Brad
Loretta Devine as Margaret
Laura Dern as Randy
Will Wallace as Bill
Janet Adderly as Obnoxious Mom
Jenna Boyd as Voice
Russ Fega as Angry Man at Starbucks
Scott Paulin as Duncan Rhodes
Wendy Phillips as Ms. Wright
Joseph Rosenberg as Joe
Eileen Ryan as Estelle
Richard Schiff as Turner
Dianne Wiest as Annie