[gabrielrdz]

I haven't bought them either, but I do think there's a market.

There are some people who are in technical departments that are not necessarily software developers but due to their responsibilities have a need to understand some technical concepts. I know we have at least one in our department. For him to spend $12 on something that will help him understand what we do better would certainly be money well spent.

They kind of remind me of the Heads First Design Patterns book.