Jay Scott Greenspan, better known by his professional name of Jason Alexander, is an American actor, writer, comedian, television director and producer, and singer. He is best known for his role as George Costanza on the television series Seinfeld, appearing in the sitcom from 1989 to 1998. He also has had an active career on the stage, appearing in several Broadway musicals including Jerome Robbins' Broadway in 1989, for which he won the Tony Award as Best Actor in a Musical. He appeared in the Los Angeles production of The Producers with Martin Short. He is the Artistic Director of "Reprise! Broadway's Best in Los Angeles," where he has directed several musicals. Alexander is also an avid poker player.
Bourbon Verlander (voice)
Prof. Rothchild
Rick (voice)
Mr. Orlando (voice)
Sal (voice)
Kurros
Earl
George Costanza
Dr. Goodman
Jason Alexander
Jason Alexander
Gene Lundy
Marty Eels
Mr. Nibbles
Mr. Nibbles (voice)
Krampus (voice)
Mountain Man
Pastor Phil
Leonard
Self
Self - Special Guest
Self - Panelist
Olix
Self - Contestant
Sy Borgman (voice)
Asher Friedman
Self - Panelist
Abis Mal (voice)
Captain Albatross (voice)
Abis Mal / Abnor Mal (voice)
Grown Baby (voice)
Stu (voice)
Gus Molehill (voice)
The Job Wizard (voice)
General H. Norman Conquest (voice)
Sexual Harris (voice)
UFO! Host / Announcer (voice)
Self
Patient
Zutho (voice)
Doctor Noum (voice)
Counselor Noum (voice)
Doctor (voice)
Self - Panelist
Duckman (voice)
Self - Presenter
Jonathan Fartjoke (voice)
Harold Stickley
Maurice Cheeks
Poseidon
Poseidon (voice)
Self
Catbert (voice)
Dr. Palmer
Self - Panelist
Coach Wallace (voice)
Dr. Chetwyn
Himself - Narrator (voice)
Goji (voice)
Harold (voice)
Jason Alexander
Ted / Wingman
Ken Swallow
Self
Alan Ballinger
Julian Beeby
Jayda's Dad (voice)
Philip Stuckey
Self - Actor
Gargoyle Hugo (voice)
Carl
Richard Cross
Randall Townsend
Jason Alexander
Jason Alexander
Pinky
Self
Chris Van Allen
Self
Mauricio
Abis Mal - the Chief of the Thieves (voice)
Lightning (voice)
Carl Laemmle
Stanford Temple
Self
Cliff Bemis
Geary
Larry Farber
Tony Kleinman
Titey (voice)
Gargoyle Hugo (voice)
Bob Patterson
Mr. Bibb / The Nome King (voice)
Cosmo
Lionel
North's Dad
Robert Grant
Neil
Noah Brooks (voice)
Mr. Stone
Dave
Marion Sandusky
Hardware Clerk
Boris
Self
British Record Mogul
Anti-Enviroment
Self
Self
Self
Self
Father (voice)
Self
self
Uncle Horst / Henri (voice)
Dr. Yakov Achmed
Self
Penguin on Belly (voice)
Jacob Marley / Marley's Ghost
Moronic (voice)
Self
Johnny
Pool Player #1
Bernie Fishbine
Elf (Voice)
Dr. Mendelbaum
Self (uncredited)
Sid Rosenthal
Self
Self - Roastmaster
Dr. Sternbach
Self/George Costanza
Albert J. Peterson
Larry's Dad
Art Witz
Self - Performer
A.C. Gilbert
Self
Self
Self
Self
Self
Nicky Steele
Self - Roastmaster
Self
Self (archive footage)
Mailman Stan
Doc Holiday (voice)
Michael Makeshift
Vinnie Di Ruzzio
Pete
Narrator
Self
Dr. Morris Saperstein
Titey (voice)
Self
Self
Harold
Self
Dr. Chetwyn
Self
Eugene (voice)
Barry Dragonetti
Mervyn
Quote Reader
Jason Alexander
Lt. Ernest Foy
Buzz Hauser
Sid Rosenthal
Self - Guest
Frank
Frank Bonner
Owl (voice)
Mark Lembeck
Himself
Self - Guest
Self
Electronics Store Customer
Himself
Self
Self
Self
Narrator
Self
William Tweed
Self - Host
Self - Cameo (uncredited)
Jason Alexander (archival footage)
Host
Self - Guest
Self - Guest
Self
Self
Jeff Bezos
Inspector Gantlet