Photos: Best Impressions on Saturday Night Live

Dan Aykroyd as Julia Child in 1978.

Edie Baskin—Warner Bros./Archive Photos/Getty Images

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Dan Aykroyd as President Richard Nixon in 1978.

Fred Hermansky—NBC/Getty Images

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Dana Carvey as Ross Perot in 1993.

Raymond Bonar—NBC/Getty Images

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Norm MacDonald as David Letterman in 1997.

Mary Ellen Matthews—NBC/Getty Images

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From left: Molly Shannon as Monica Lewinsky and John Goodman as Linda Tripp in 1998.

Mary Ellen Matthews—NBC/Getty Images

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From left: Jimmy Fallon as Michael Stipe and Ana Gasteyer as Celine Dion in 1998.

Mary Ellen Matthews—NBC/Getty Images

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Darrell Hammond as Sean Connery in 2000.

Dana Edelson—NBC/Getty Images

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Will Ferrell as Alex Trebek in 2002.

Mary Ellen Matthews—NBC/Getty Images

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Maya Rudolph as Donatella Versace

Mary Ellen Matthews—NBC/Getty Images

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Alec Baldwin as Tony Bennett in 2005.

Dana Edelson—NBC/Getty Images

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From left: Darrell Hammond as Bill Clinton and Will Ferrell as Janet Reno in 2007.

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Will Farrell as President George W. Bush in 2008.

Dana Edelson—NBC/Getty Images

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From left: Tina Fey as Governor Sarah Palin and Amy Poehler as Senator Hillary Clinton in 2008.

Dana Edelson—NBC/Getty Images

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Kristen Wiig as Liza Minnelli in 2012.

Dana Edelson—NBC/Getty Images

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Kenan Thompson as Rev. Al Sharpton on Oct. 25, 2014.

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Kevin Hart as James Brown on Jan. 17, 2015.

Dana Edelson—NBC/Getty Images

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Kate McKinnon as Justin Bieber on Jan. 17, 2015.

Dana Edelson—NBC/Getty Images

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