Kate Ward
November 10, 2010 AT 06:25 PM EST

Lior Reuveni

This weekend, Scarlett Johansson will be hosting Saturday Night Live for the third time — with musical guest Arcade Fire — which means three things: 1) Halo‘s interactive universe will be suspiciously silent as of 11:30 Saturday night, as teenage boys flock to NBC, 2) We can cross our fingers for a Ryan Reynolds cameo, and 3) We’ll see some comedic magic from Johansson. Well, that is if the actress’ SNL promos — with cast member Smitty Jason Sudeikis — are any indication. Click the jump to see Johansson’s promos for the show, which include an appearance from a certain Iron Man(!).

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Anne Hathaway, Scarlett Johansson to host ‘SNL’ in November

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