Justin Bieber to guest star on CSI Sept 23, 2010

What better way for Justin Bieber to begin his transition from floppy-haired pop star to Serious Grown-up™ than by appearing on a CBS crime procedural that dispatches with its guest stars in the most graphic ways imaginable?

On Thursday, CBS said that Mr. Bieber has been cast in the season premiere of “C.S.I.”, which is scheduled for Sept. 23. According to a news release, the 16-year-old singer