"Bones": On paper, they seem like complete opposites: Brennan's a strict scientist who has difficulty in believing in what can't be proven by hard facts; Booth's a laid-back FBI agent who goes with his gut. Most of their core values directly contradict each other, yet you can't help but root for those two crazy kids to work it out. Nearly every week the show ends with Booth and Brennan together, talking about the case, life, or sometimes even love. And now that Brennan has turned down Booth's plea for them to be a real couple, the chemistry has taken a fragile new turn.
"Castle": Castle and Beckett are essentially two kids on a playground. From the very start of their relationship, they took pleasure in tormenting each other to try and get a reaction. Their flirtation is often blatant and obvious in an attempt to throw the other one off their game, though as time has gone on, there has been a hint of a potential for more. But thus far, we haven't seen a serious attempt from either of them to make an attempt to further the relationship along.
Winner: We never knew mistletoe kisses could be hot, but "Bones" sure proved us wrong. We're a little surprised our television hasn't caught fire yet from the Booth/Brennan chemistry as they continue to dance around each other.
-- Marisa Roffman, Zap2it