Scarlett Johansson is back this Saturday. Let's pick the best female hosts in "SNL" history.
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Why she's great: With three hosting stints under belt, Melissa McCarthy has proven she is the preeminent physical comedian of the 2010s. Bonus: that time she showed up to play Chris Farley's Scott Foley character on "SNL40" too.)
Proudest showing: As carnal cubicle worker Arlene, she rubbed up on Jason Sudeikis and worked sexual magic in that swivel chair.