Larry Cedar
From Wikipedia, the free encyclopedia. Larry Cedar (born March 6, 1955) is an American actor and a voice actor best known as one of the players of the highly-acclaimed Children's Television Workshop mathematics show, Square One TV on PBS from 1987 to 1994. Cedar is also known for playing "Leon", the opium addicted thief and faro dealer in the internationally acclaimed HBO series, Deadwood.
Known for
Constantine 
Fear and Loathing in Las Vegas 
The Crazies 
Would You Rather 
Hollywoodland 
Justice League: Gods and Monsters 
The Hidden 
Sparks 
The Gingerdead Man 
C.H.U.D. II: Bud the Chud 
Atlas Shrugged: Who Is John Galt? 
Feds 
Alyce Kills 
Philadelphia Experiment II 
Midnight Son 
Abraham's Boys: A Dracula Story 
Boris and Natasha 
Love Letters 
Oliver, Stoned. 
Killer Kate! 
Deep in the Forest