Bespectacled Sidney Lassick looked more like a vice-principal or shop steward than an actor. This lack of showbiz slickness came in handy for the "everyman" roles assigned him. Lassick played the manic-depressive Cheswick in One Flew Over the Cuckoo's Nest (1975) and the sarcastic English teacher in Carrie (1976), to cite two roles among dozens. More recently, Sidney Lassick was seen in The Further Adventures of Tennessee Buck (1988) and Deep Cover (1992)