Well, I have now successfully completed three single socks (ah, the joys of test-knitting patterns). Alas that they don't make a pair! Did anyone ever decide if two unmatched singles count as a pair? In case they do, I'm including them, but I understand if they don't.

Sock the first. This is the
Kicking Leaves sock (Ravelry link) by Laura Patterson, knit in Old Maiden Aunt yarn, to the tune of 150 yards.
And then there's sock the second.

That's one of
Anne Hanson's Woodsmoke socks, knit in Socks That Rock lightweight. About 180 yards.
And, finally, the one that isn't a test-knit. I worked on this one at a conference over the weekend, and finished it up quickly (there was a lot of sitting still happening).

That's my own pattern (with the funky toe-up heel I've been wanting to try), knit in Chasing Rainbows Dyeworks yarn (a 50/50 merino/tencel blend) in the forest colorway. I used about 200 yards for that one.
Now let's see if I can knit some second socks before I get distracted by something else!