Derek Hough is heading to Las Vegas, and can't wait to be back onstage doing what he loves most: performing live!While guest co-hosting Entertainment Tonight on Monday, the 36-year-old dancer teased what fans can expect from his upcoming residency,, which kicks off Sept. 22 at The Summit Showroom at the Venetian Resort.«Man, I am so excited,» Hough raved to ET's Kevin Frazier.