A photo of Alex Karev (Justin Chambers) in "These Ties That Bind," from the fifth season of Grey's Anatomy. What do you think he's up to?

A photo from the fourth season finale of Grey's Anatomy, "Freedom." Alex Karev can do nothing but sit and wait.

Will Arizona bring Alex back into the pediatrics fold? That's the rumor going around!

A photo from the fourth season finale of Grey's Anatomy, "Freedom." Alex Karev and Izzie Stevens are in the heat of a discussion... will the episode end with them getting back together?

Pediatrics is where Alex belongs. An attending is where he should be in that department. Don't you agree?

Karev and Robbins have a conversation about some things.

Alex pleads with Izzie to let Denny go.

Alex and Ava/Jane Doe's baby.

Justin Chamber as Alex Karev in a Grey's Anatomy promotional pic. We're loving his character more each season.

Alex, Arizona and Lexie are all looking pretty in pink.

Izzie and Alex kiss after exchanging vows in their emotional wedding. The whole gang was on hand to watch the two doctors get married.

Alex tends to ailing Izzie in an emotional Season Five scene from Grey's Anatomy. These two have become bigger and bigger characters since the series debuted.