Or smiles? We can't really tell. But in this picture from "These Ties That Bind," the eighth episode of Season Five of Grey's Anatomy, Mark looks intrigued by something to say the least.
In this photo from the fourth season finale of Grey's Anatomy, "Freedom," Derek, Mark and Richard are seen in a rare scene outside Seattle Grace. Where is it?
Mark and Addison in a photo from "Blink." A crossover event is totally in effect as Grey's Anatomy finally returns from its hiatus on January 14, 2010.