Looks like tensions are still running high on Thursday's Grey's Anatomy.

When Shane steps into the waiting room to deliver an update to his patient's father, it doesn't go over well, prompting Derek to step in as the altercation turns physical in a hurry.

Check out the clip from "Idle Hands" and comment below:

Meanwhile, Mer's pregnancy takes center stage as she worries about her unborn baby, while more changes are made by the new management and Alex gives Jo's boyfriend a run for his money.

Check out our photo gallery from the episode, too!

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.