Acting Casey Carlson Acting A Charlie Brown Celebration Polly / Truffles (voice) 1982 It's Magic, Charlie Brown Marcie (voice) 1981 Bon Voyage, Charlie Brown (and Don't Come Back!) Marcie (voice) 1980 Life Is a Circus, Charlie Brown Polly (voice) 1980 She's a Good Skate, Charlie Brown Marcie (voice) 1980 You're the Greatest, Charlie Brown Marcie / Crowd (voice) 1979 Agent-readable