Design Patterns

Anyone else read the infamous "Design Patterns" book by the gang of four? If so did you like it or find it someone esoteric. Also, do you like these links?

http://www.agcs.com/supportv2/techpapers/patterns/papers/tutnotes/

http://www.dofactory.com/Patterns/Patterns.aspx

I don't have time to write a lot now, but I liked the book a lot. I have used a number of things from that book over the past year.