Recycling Sweaters for Yarn

Have an ugly sweater you received as a gift? Need some yarn? Instructions for how to recycle an unwanted sweater into yarn that can be sold or used to knit, crochet, weave or otherwise craft something new. I'm sure this can also be done with scarves, blankets, shawls, or anything else made of yarn.

If you recycle some and make something new send me pictures and I'll post them here.