Comprehensive doesn’t even begin to cover the amount of information on this site about tying your shoes.
I've had this desire at the back of my mind to re-learn a lot of the knots I've forgotten since my days as a Boy Scout. I'm rather embarrassed that I remember so few of them actually. Andy's collection of knots looks like a great place to start digging in.
Bonus: knots look like a fun way to keep my hands busy while watching TV.