Alec Baldwin is probably one of the funniest guests ever to host Saturday Night Live and he's making a return visit this weekend. On top of promoting his (freakin' hilarious!) role on 30 Rock, Baldwin is also in half the movies in the theaters this holiday season, including The Departed, Running with Scissors and The Good Shepherd. He'll make his 13th appearance on the show this Saturday, November 11th, along with musical guest Christina Aguilera.

Baldwin has been in some classic SNL sketches-- "Cantine Boy" and "Schwetty Balls" come to mind-- so hopefully we'll be treated to a new classic. He makes a great guest because he commits to his roles 100% and he's up for anything.

Also this month, Chris 'Ludacris' Bridges will play the dual role of host and musical guest. His episode airs November 18th.