[Watch] Preview Promo for SNL Finale Featuring Mick Jagger, Foo Fighters & Arcade Fire

The clue's in the title for this one. Tomorrow Mick Jagger hosts the season finale of Saturday Night Live and will be joined by guests Foo Fighters, Arcade Fire and Jeff Beck. Peep the little teaser promo video at the top. Make sure you cancel any plans you have tomorrow evening! (Via CoS