Derek Shepherd Gets Tough on 'Grey's Anatomy' (VIDEO)

Ooh, remember when Derek Shepherd was just another hot doctor at Seattle Grace, making eyes at a certain intern and going about his neurological business?

Now he's the big, bad chief who has to make the hard decisions, whether it's ordering a patient to abide by his wishes or telling the former chief that he'll do that surgery, gosh darnit, and Bailey will assist.

It's ok, though. We know that underneath that snarly business persona beats the heart of a hot doc with great hair on 'Grey's Anatomy' (Thu., 9PM ET on ABC).

Watch the video after the jump.Ooh, remember when Derek Shepherd was just another hot doctor at Seattle Grace, making eyes at a certain intern and going about his neurological business? Now he's the big, bad chief who has to make the hard decisions, whether it's ordering a patient to abide by his wishes or telling the former chief that he'll do that surgery, gosh darnit, and Bailey will assist. It's ok, though. We know that underneath that snarly business persona beats the heart of a hot doc with great hair on 'Grey's Anatomy' (Thu., 9PM ET on ABC).