Design patterns

I've been doing some reading up on design patterns, mostly actually since i was curious on the book - Head First Design Patterns.

It is great - i can honestly say that it is the best IT-related book I've ever read. It is the first time (embarrassing enough) I understand some of these patterns. It covers a lot of different aspects and do just enough of deep exploration. And (not least) it is FUN - i actually laugh when i read it. When did you do that reading for example this book (which also is good, but not fun...).

However - a colleague tipped me on a great resource for pattern explanations on line: http://www.dofactory.com/Patterns/Patterns.aspx

Thanks Calle for the tip, and for borrowing the book