Happy Thursday! Tonight's Grey's Anatomy episode on ABC is "An Honest Mistake."

In this Season 5 repeat, one surgical legend hangs up her scalpel, while another Seattle Grace "god" finds that his abilities and confidence are shaken like never before.

Meanwhile, Izzie learns that one of her interns misfiled lab results that mistakenly "gave" an anemic woman cancer. That means someone else out there has the cancer.

Derek and Mark also get into a fist fight. It's not to be missed. If you missed "An Honest Mistake" or need a full rundown, it's here in our comprehensive episode recap.

Grey's Anatomy videos and pictures from the episode are live for your enjoyment, along with our music guide, Round Table and list of the best Grey's Anatomy quotes.

Thank you for visiting Grey's Anatomy Insider. Is it September 24 yet?

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