"Knit 2 together through the back loop" is my favorite bind off. It's not as structurally stiff as a regular bind off, and not as stretch as Jeni's super stretchy bind off (which I love for lace). I use this bind off in most of my patterns, so here's how to work it.
K2TOGTBL BIND OFF
When you are ready to bind off, knit the first 2 stitches.
Next, slip both stitches back to the left hand needle.
Knit these two stitches together through the back loop.
Slip the new stitch onto your right hand needle, and knit the next stitch o your left hand needle.
Slip both back to you left hand needle and knit them together through the back loop.
Continue in this manner, K2TOGTBL then knit the next stitch, slip both back to left hand needle K2TOGTBL... until all your stitches but the last one are off your needles. Cut the yarn and draw through the last stitch.