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The SNL Archives
Details
Aired on12.08.1990
Segment7 of 13
ShowThe Global Warming Christmas Special 
Tom Hanks  ...  Dean Martin
Ralph Nader
Dana Carvey  ...  Paul McCartney
Chris Farley  ...  Dom DeLuise
Phil Hartman  ...  Issac Asimov
Jan Hooks  ...  Crystal Gayle
Victoria Jackson  ...  Sally Struthers
John Henry Kurtz  ...  announcer (voice)
Mike Myers  ...  Carl Sagan
Kevin Nealon  ...  George Hamilton
Julia Sweeney  ...  Petula Clark
Christine Zander  ...  Linda McCartney