I've found my new favorite knitting pattern: it is the Plain Vest by Anna and Heidi Pickles.
I first saw it on Posie Gets Cozy here. Once I cast on, before I knew it the vest was nearly knitted.
Since it was so fun, I immediately cast on for another one, since I had just enough yarn. I cut out a few rows, and bound off tightly and ended up with just about 4 inches of yarn to spare.