I'm trying out Anna Zilboorg's new sock construction: free-sole. In case you haven't heard of it yet, the instep and the sole are knit flat and attached at the sides by a toe band. The purpose is so you can detach a section of the sole if and when it wears out and easily reknit it.
My yarn for the project is a lambswool/angora blend that I liberated from a thrift-store sweater and dyed with food coloring. The color work is stranded and knit two-fisted, so to speak (the soles and heel will be plain ol' stockinette in brown). Instead of purling and getting yarn balls all twisty, I'm knitting backwards. I'm about 5 inches into the instep (knitting 2AAT, toe up) and already in love.