The Coolest Use I've Seen of XML in Awhile

This is absolutely, utterly brilliant—an XML schema for knitting patterns. (Hat tip: Kat with a K.) Seriously, if you don't knit/crochet/etc. you probably can't even begin to understand the brilliance of the idea of expressing patterns in a standardized, machine-readable markup language—although the linked page does a nice job of explaining it—but trust me, it is brilliant. I'm so tempted to create a schema along these lines for crocheting patterns now, since I can't knit to save my life but can crochet a mean pair of gloves....