My favorite moment was when Burke said "ok" then Cristina said "ok" then he said "YES!" and grabbed her and she giggled. I thought it was the cutest thing.
Completely floored by the whole Vegas thing, I did NOT see that coming.
I loved George sticking up for Callie and Izzie starting to make fun of her middle name and George stopped it. The look Callie gave George expressing her delight was so great.
Did not like what Addison and Mark were doing at the end, but was amused by her "i'm not thinking about you right now". Was she thinking about Alex, then?
I really love Bailey. Her dicussion with the 'clinic patient' and the girl's father was wonderful. She can put anyone in their place, and even better when she does it in a loving, motherly way.
(I apologize for my poor use of verb tense and run-on sentences. I work third shift and I haven't been to sleep yet!)