Justin Timberlake and Jimmy Fallon Do a "Single Ladies" Dance Routine at the US Open

Leave it to Jimmy Fallon and Justin Timberlake to bring some laughs to the US Open. The BFFs broke out into a full-on dance routine to Beyoncé's "Single Ladies" while taking in Roger Federer's match during the tournament on Wednesday. As the song played, Justin and Jimmy did their best Queen Bey impressions, even showing off some of the same choreography from the music video - if you recall, Justin starred in a sketch with Beyoncé as one of her "Single Ladies" backup dancers during his SNL hos...