We posted a promotional photo gallery yesterday, now here are four sneak previews of Thursday's new episode of Grey's Anatomy, "I Always Feel Like Somebody's Watchin' Me."

In the first preview, Mark encourages an uptight Derek to go clear his head and not go chew Richard out over the proposed cutbacks at Seattle Grace. But everyone's worried ...

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Follow the jump for three more clips from the episode - in which Izzie debuts her new wig and Cristina makes her debut in pediatrics with Arizona - and tell us what you think ...

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