Sydney Lassick (July 23, 1922 – April 12, 2003) was an American character actor perhaps best known for his role as Charlie Cheswick in the feature film One Flew Over the Cuckoo's Nest.
Lassick, who served in the U.S. Navy during World War II, and afterwards studied drama at DePaul University,[2] began acting in both films and TV shows in the late 1950s.
Lassick is perhaps best known for his portrayal of Charlie Cheswick, a whiny and childish manic depressive patient in the 1975 Academy Award-winning film One Who Flew Over the Cuckoo's Nest.
Other memorable roles include a fey Fairy Godfather in the lowbrow Sinderella and the Golden Bra; Mr. Fromm, the spitefully sarcastic English teacher in the 1976 film adaptation of Stephen King's novel Carrie; the perverse and abusive innkeeper Ernest Keller in slasher horror The Unseen; the slimy Charlie P. in the cult film Sonny Boy; and the effeminate lackey Gopher in Deep Cover (1992).
In television, Lassick guest starred on such shows as Eight Is Enough, Baretta, Hawaii Five-O, Barney Miller, Matt Houston, Moonlighting, Night Court, Knots Landing, Dream On and The X-Files.