Nick Lachey to host NBC's 'Sing-Off'

Talent show's judges include Ben Folds, Shawn Stockman

NBC on Monday officially unveiled Nick Lachey as the host of upcoming talent reality competition "The Sing-Off."

The network also announced Ben Folds (Ben Folds Five) and Shawn Stockman (Boyz II Men) as two of the show's three celebrity judges.

On the four-night series, which will air Dec. 14-21, eight groups will perform a cappella, competing for a $100,000 prize and an Epic Records/Sony recording contract.