Hall & Oates The Ultimate Showdown

9/6/2011 4:10 PM PDT

Chromeo's Idols Hall and Oates -- Who's Cooler?

Electrofunk badasses Chromeo were thrust into the middle of one of the greatest mysteries in the universe -- Hall or Oates ... who's cooler? And, yes ... mustaches matter.

Check out TMZ on TV -- click here to see your local listings!