'The Sing-Off' Season 3 Finale Results: The A Cappella-Palooza Chooses Its Champion

Tonight's Sing-Off season 3 finale may have been 110 minutes of filler and 10 minutes of results, but at least it was smile-inducing, soul-lifting, toe-tapping filler.

In between performances by the final three groups -- the Dartmouth Aires, Urban Method and Pentatonix -- we learned about each group's charity efforts, and heard reunion songs by the male and female members of the Sing-Off Top 10 acts. Judges Sara Bareilles and Ben Folds and host Nick Lachey also got in on the fun, taking turns performing medleys with the final groups. (Nick Lachey singing 98 Degrees with Pentatonix? Equal parts awesome and hilarious. It was a nice reminder that he's better at singing than hosting.) Plus, no big deal, the legendary Smokey Robinson popped in for a spell, as did rapper Flo Rida.

If the show had stopped there, you might have thought you were watching an NBC holiday special about the emotional and cultural power of a cappella. (But no, because that airs next Monday, and it's called The Sing-Off Christmas special, and it's not a joke! It is a real thing that is happening!)



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