Beyonce's Single Ladies video was largely lifted from a video called Mexican Breakfast with Broadway great Gwen Verdon and choreographed by none other than Bob Fosse (Chicago). The singer admits it in this video below and that she saw the original on youtube:
So check out the original video of Mexican Breakfast. The video was shot in one take from start to finish without any cuts. They don't do that anymore today!
Edit: Here's a related article from Playbill.com. And I found this Gwen Verdon Mexican Breakfast video set to Beyonce's Single Ladies. See......the choreography works really well with the song!