There's a lot hnngh I loved Alice and Nonnally showing up, Kallen, and Lexaeus, and Morgan and that one comment of Anya's that I saw and--
Also, the entirety of the DGM cast that showed up. And I cast a vote for Bookwoman in particular, because I wasn't expecting her to be awesome but she blew me away.
BUT REST ASSURED THAT I LOVED EVERYONE, I just don't have room to list them all.