Nothing says merry Christmas like seeing The Rock ... singing "Here comes Santa Claus" ... in a onesie on Live with Kelly and Michael.
Fair warning: You can't un-see The Rock swiveling his leg Elvis-style, but gather 'round the computer, pour some healthy servings of eggnog and call it quality family bonding courtesy of Dwayne Johnson. Those cherished opportunities simply don't come around but once a year.
Here's the entire Christmas kareoke smackdown challenge:
