And the winner is...kelp! Kelp, I couldn't find an email address for you, so please email me with your mailing address. My previous contest experience unfortunately requires me to state that if the winner does not contact me within one week, I will randomly select a new winner.
I wish I had enough sock yarn for the multitudes of Spartaci, but alas, I don't. (Well, that may not be entirely true, but I refuse to go count the sock yarn stash.) Thanks to all for the enthusiastic responses! There will be more contests in the future.
In other news, once I stopped sniveling over my too-long Urban Aran sleeves, it only took about an hour to reknit both sleeve caps. I'll be seaming this weekend!