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.
Filmography
Grey's Anatomy
NCIS
House
Stargate SG-1
Two and a Half Men
American Horror Story
Charmed
Frasier
Gilmore Girls
Star Trek: Voyager
Without a Trace
Young Sheldon
The Closer
Mad Men
M*A*S*H
Star Trek: Deep Space Nine
Boston Legal
The Shield
Star Trek: Enterprise
Mom
Harry's Law
Community
Strong Medicine
Chuck
We Bare Bears
21 Jump Street
Boston Public
Superman: The Animated Series
Ben 10
Deadwood