It's as friendly as a rivary can get.

Jimmy Kimmel showed up at a Clay Aiken appearance a few months ago and expressed his love for this laid back singer. Even it the action was meant to mock, it was done kindly enough.

Last night, season two's American Idol runner-up returned the favor. He showed up on the ABC late night talk show, chock full of love and affection. Just take a look:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.