Paging Dr. Ungreytful -- Get Off Your Heigl Horse!

6/12/2008 12:22 PM PDT BY TMZ STAFF
It's only a matter of time until Katherine Heigl pisses off every writer in Hollywood.

She's already knocked down "Knocked Up" and yesterday Heigl trashed the writing staff at "Grey's Anatomy", too. Sure, the show did kinda blow this season, but she's still gotta work with them. Awkward.