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Patrick Thomas O'Brien is an American actor. He is perhaps best known for playing the role of Mr. Dewey, the math teacher from Saved by the Bell.
The Curious Case of Benjamin Button
2008
Win a Date with Tad Hamilton!
2004
Inhabited
2003
Bill Apablasa
2 shared
Nathan Lane
Michael Davis
Bailey Stender
1 shared
Marcia Moran
Eric Lutes
actor
