I have been trying out the magic loop method to knit two socks at a time.
Its amazing how fast it is, I finished one pair in three days. I have started another pair the same because I I brought two balls of yarn for $5.00 and will get two and a bit pairs out of it. Wayne is quite happy to have two pairs the same colour , I have made the toes different on each pair. If you knit sock and have not tried the magic loop method have a go its fantastic and so easy . Here is the site I use http://www.cometosilver.com/socks/2mlsocks_start.htm
I only make toe up socks but you can use the loop for top down as well.