The search continues tonight for America's favorite dancer when SO YOU THINK YOU CAN DANCE lands in Las Vegas for the first round of call-backs. See what happens when the best dancers skilled in everything from ballroom and ballet to salsa, jive, hip-hop and krumping, all compete to be named America's favorite dancer. Watch and find out who strikes it rich in Vegas and who goes for broke on the "Las Vegas Call-Backs #1" episode of SO YOU THINK YOU CAN DANCE.