Happily rewatching Grey's Anatomy 
The past few episodes he's been a bastard!
He cornered Meredith and called her a slut for sleeping with George and the vet. Not cool, especially when he was the married man who forgot to mention that to Meredith in the first place.
He manhandled Addison out of the door, in the pouring rain.
He slept with Meredith at the prom, and then blamed Addison for ending the marriage when Mark came out the shower!