Tina Majorino in a photo from the December 6, 2012 episode of Grey's Anatomy, "Love Turns You Upside Down."

A Season 3 guest star.

Callie in a nice photo from "Idle Hands," the 3/21/13 episode of Grey's Anatomy.

Justin Chambers as Alex and Camilla Luddington as Jo in a scene from this week's Grey's Anatomy episode, "This is Why We Fight."

At least that's what she hopes for. Here's Teddy and Henry from the March 24, 2011 episode of Grey's Anatomy, "This Is How We Do It."

A bike racer flirts it up with Mer.

The shard of glass, yes. The rift between Burke and Cristina? That too.

Richard in a scene from the May 2, 2013 episode of Grey's Anatomy.

Drs. Izzie Stevens and George O'Malley have an intense talk in this still photo from "Where The Wild Things Are," in Season Four of Grey's Anatomy. Will this popular couple survive another week?

Justin Chambers as Alex and Camilla Luddington as Jo in a scene from this week's Grey's Anatomy episode, "This is Why We Fight."

In this picture from "Here Comes the Flood," from the fifth season of Grey's Anatomy, Lexie and George continue to bond. Do you like them as a couple?

A shot of Patrick Dempsey from the 1980s, when he became a star.