Great Natalie Portman rap from Saturday's SNL 
Just about the only thing worth watching on Saturday Night Live lately has been the pre-recorded segments like the stuff that the Lonely Island kids are doing. NOTE: watch this video soon as You Tube is cracking down hard on copyrighted material. UPDATE: Perhaps this will be a more permanent spot to see this video (or at least higher quality)
UPDATE: I changed the link above. It seems NBC is sending out Cease and Desisits like Christmas cards. I would like to echo the sentiments of this guy:
Lazy Sunday is one of the most virulent of viral media I've seen in years. It literally was on nearly every site I frequent. I watched it at YouTube, and went back to view it on YouTube several times and gave the URL to friends. This sparked the discussion of whether SNL was finally "not sucking" anymore. Get the idea? People were talking about one of your shows, one which hasn't been, you know, funny in years.