Will Smith by Jeffrey Ufberg/WireImage.com and David Letterman by John P. Filo/CBS Will Smith by Jeffrey Ufberg/WireImage.com and David Letterman by John P. Filo/CBS

It's hard to tell who was hitting on whom more in this clip, but clearly Will Smith and David Letterman were both a little smitten with each other when Smith came on the show to promote his new movie Hancock. During the interview, Letterman began to compliment Smith on how great he looked, but things took a bit of a turn when they both dove in for a kiss. How gosh-darn-cute are those two?!

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