What celebrity really knocked your socks off this year? Was it Trey Songz or Usher who made your heart race? Could it have been the delicious El DeBarge, whose comeback swagger made us give him a “Second Chance?” Or, maybe it was Blair Underwood, whose hit show “The Event” had us programming our DVRs? It’s hard to pick just one, right? We rounded up 20 of the sexiest celebs of 2010. Let’s relive the magic… Click here to see the sexiest men of 2010.