The 37th season finale of Saturday Night Live will be hosted by Mick Jagger tonight on NBC. Jagger will be performing on the show with Jeff Beck, the Foo Fighters and Arcade Fire.The promos were shot on the SNL stage with Jagger surrounded by all the members of Foo Fighters and Arcade Fire. If you're going out tonight make sure and set the Tivo or DVR and don't miss the hilarity that will ensue!