See nothing to worry about with Derek's date with Sydney. I am a little worried about him and that scrub nurse though. Meredith is starting to come around and I would hate to see something else come between them.
Izzy and George, well they're best as best friends.
Loved the "you look like her father" comment to Sloan. He's so egotistical it's nice to see them mess with him occasionally!
Bailey: She was acting like a love-stuck teenager, which was the point, but it bothered me a lot. It was good to see a bit into her pre-doctor life, but I didn't like Mandy! It was funny to see her lash out to Derek only to find out he was an akward little band geek too. Picturing as an awkward teenager in a band uniform is not the easiest thing to do
Now that Meredith knows about her father, I have a feeing she is going to try to help Lexie out a bit. Maybe just by treating her a little better. I wouldn't expect Meredith to help take care of her father. Baby steps is all she can handle. But maybe in the future she will be able to help Lexie get their father into AA and get some help.
I like the whole high school clique theme of the episode. It was nice to see a bit into some of the characters' pasts.