Golden Boy (9 p.m., CBS/Ch. 2) was supposed to have moved to Friday nights. As a matter of fact, an episode of the cop drama aired this past Friday.But CBS programmers have changed their minds about the move and decided to leave "Golden Boy" on Tuesdays at 9 p.m.In this week's episode, a cop is killed while working security for a rap mogul.As for "Vegas," which used to air on Tuesday nights, CBS programmers have decided to ship that show off to Fridays. It returns on April 5 at 8 p.m.Elsewhere on TV ...Celebrity Wife Swap (7 p.m., ABC/Ch. 4): The wives of Gilbert Gottfriend and Alan Thicke trade places.American Idol (7 p.m., Fox/Ch. 13): The 10 male semifinalists perform.Hell's Kitchen (7 p.m., Fox/Ch. 13): A new season of this cooking competition begins.Betty White's Off Their Rockers (7:30 p.m., NBC/Ch. 5): More practical jokes. (A repeat airs at 7 p.m.)The Taste (8 p.m., ABC/Ch. 4): A winner is declared in the season finale.Cougar Town (8 p.m., TBS): Laurie is confused about her feelings for Travis; Jules starts hanging out with her therapist.Body of Proof (9 p.m., ABC/Ch. 4): Megan and her team come under fire while investigating a murder.Smash (9 p.m., NBC/Ch. 5): Derek and Karen have a big decision to make.Pretty Little Liars (9 and 11 p.m., ABC Family): Spencer seeks answers about Mona's past.The Lying Game (10 p.m., ABC Family): Emma confronts Rebecca about her lost childhood.Justified (11 p.m., FX): Drew Thompson gets away from Raylan.