Pop superstar Lady Gaga will appear on the FOX dancing competition show, "So You Think You Can Dance," according to the show's producers.  Gaga will reportedly appear on the show Wednesday, July 27th, to judge the final eight contestants, then will be back on Thursday to give a live perrformance.  Both shows will be televised on Fox Television at 8 PM ET.  Later on Thursday, Gaga will appear on ABC's "Jimmy Kimmel Live!", and the entire city block behind the studio will be shut down for her performance, when she will reportedly play her latest single, "You and I."  Watch the promo for Gaga's "So You Think You Can Dance" appearance below.