Here is a video of Mark Haim, who is a choreographer now based in Seattle and has been a member of ADF's faculty since 1993, teaching JaQuel Knight's choreography of Beyonce's "Single Ladies" to a huge class of dancers. Mark performed "Single Ladies" at the ADF faculty concert with four back-up dancers (two of which were men). It was a sneak performance, as he had originally intended on dancing a piece to Mozart. He surprised the audience right before his performance and announced that he would be performing a piece in honor of Bob Fosse and JaQuel Knight. Get it JaQuel, and congratulations for making it to pop icon status.