ABC’s flagship series, Dancing with the Stars, will return on Monday, March 21. It will be interesting to see if the absence of star dancer Derek Hough, who is off to do a movie,  will impact the reality juggernaut. Unlike American Idol star judge Simon Cowell, Hough is only taking a temporary leave and said he will be back for the fall cycle. The celebrity cast of the spring Dancing will be announced on Feb. 28 during The Bachelor. The show’s bookers have a tough act to follow with last cycle’s buzzworthy cast led by Bristol Palin.