My mom took a sock knitting class and learned how to knit two at a time, toe up, on circular needles.
This is from a class I took with Melissa Leapman where we learned how to knit a circular sweater/jacket with our stash.
And, here is the sock that I worked on when I had some free time that weekend. I finished it tonight so now I will start the second one. I need to finish up my current projects so I can get started on all of the new projects I have in mind from Stitches.