Pattern: "On-Your-Toes Socks" by Ann Budd in the Summer Interweave Knits. The only difference is that mine have a ribbed foot and leg, B's have a plain stockinette foot with ribbed leg.
Yarn: Koigu - Mine are KPPPM color 608 (2 skeins), B's are KPM color 4000 (3 skeins).
I Love Koigu. What else can I say? The colors are gorgeous, and what's arguably an even better feature, these socks have been through the washing machine - the red ones several times now - and held up great. (Those red ones were finished literally a couple of months ago.)
And while the pattern is a little bit basic, toe-up socks are great fun, and the structural elements - toe, heel - came out beautifully.