Apparently not having his fill of faux sketch-comedy making, 30 Rock's Alec Baldwin will guest-host Saturday Night Live for a lucky 13th time on Nov. 11. (Raising the question: can SNL spoof an SNL-spoofing series? Or is that like when Marty McFly stole a baseball almanac?) Appearing as musical guest that night will be Christina "It's Painful When I Try to Act in My Music Videos" Aguilera.

Next up, on Nov. 18: Chris "Ludacris" Bridges, doing double duty as host/musical act. Then, on the 25th, an encore of this season's Hugh Laurie/ Beck outing.