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Things are heating up with the cast of Grey's Anatomy -- and not in a good way. In October, Isaiah Washington and Patrick Dempsey got in a fight when Isaiah allegedly used a homophobic slur toward co-star, T.R. Knight. Things seemed to calm down on the set, but the fire was reignited at the Globes when the cast went to the backstage pressroom after winning the award for Best Dramatic TV Series. When a reporter asked Isaiah about the incident, he denied his involvement and used the slur again. (Way to prove your innocence, man.)

Sympathetic and quick-to-act like her onscreen character, Izzy, Katherine Heigl isn't letting Isaiah off easy. "I'm going to be really honest right now, he needs to just not speak in public. Period. I'm sorry, that did not need to be said, I'm not okay with it," she told Access Hollywood's Shaun Robinson at a post-Golden Globes party. "I just feel like this is something that should be very much in house we need to deal with and it's among us and the cast and crew and among Shonda [Rhimes, show creator] and the producers… I don't think he [Isaiah] means it the way he comes off... But, T.R. is my best friend. I will throw down for that kid. I will beat you up. I will use every ounce of energy I have to take you down if you hurt his feelings."

Well, Grey's definitely is the Best Dramatic TV Series -- on and off camera.