'Single Ladies' song

Here are the many different versions of dancing performances taken from 'Single Ladies' by Beyonce. I picked out a couple of them from youtube.

Single Ladies Single Man Beyonce Mashup:
http://www.youtube.com/watch?v=-ifGHUfR5Ks

Beyonce & Justin Timberlake - Parody "Single Ladies" SNL (still working not deleted by NBC)
http://www.youtube.com/watch?v=TegjiG2mrzI
Extremely hilarious! Watch who's sexy dancing it! "We're the dancers!"