TV highlights: 'Crazy Ex-Girlfriend' premieres on the CW

(All times Eastern)Leonard and Penny break the news that they are going to move in together, leading Sheldon to regress to 2003 on "The Big Bang Theory" (CBS at 8 p.m.).Selena Gomez, Missy Elliott, Brad Paisley and John Fogerty act as advisers as the battle round begins on "The Voice" (NBC at 8).