CBS has announced the premieres of four new series, bumping a current freshman hit in the process. Love Monkey, starring Ed's Tom Cavanagh and West Beverly High's Jason Priestley, will debut Tuesday, Jan. 17 at 9 pm/ET, while The Jenna Elfman Show will bow Monday, Jan. 23 at 9:30 pm/ET. Arriving in March will be Julia Louis-Dreyfus' The New Adventures of Old Christine and 24 prez Dennis Haysbert's The Unit. The Elfman show effectively displaces Out of Practice, which already earned a full-season order and will return in March. In the meantime, Henry Winkler now is free to reprise his role as Arrested Develop... er, maybe not.