Superfreak - S7-E3
Character mistake: When Meredith adds Amy's name to the board for Derek's surgery she spells Amy's last name differently than Derek's.
Grey's Anatomy (2005)
1 character mistake in season 7
Continuity mistake: When attaching the arms during surgery, they show the same arm with the tattoo "Nicole" pink up twice instead of showing both arms.
Katie Bryce: My head is full.
Dr. Meredith Grey: It's called thinking. Go with it.