Watch this classic scene from Season 7!
MerDer write their vows down on a post-it and sign it.
Addison is cheating on Derek with Mark.
This little detail doesn't stop Derek from asking her out.
Meredith tells Derek they could be extraordinary together.
This man will turn out to be her boss AND future husband.
He's just perfect.
Watch this classic clip from Season 9!
Getting back to work, even for one night, is a stress reliever.
Derek is going to focus on his research to free up time for Meredith.
Jackson is still getting lessons from Mark, even from the grave.
Your daughter is alive.
Derek proves he's a McDreamy daddy by donning a princess crown for Zola!
Bailey has parenting advice for Derek in this classic scene.