To reiterate the subject for those who care about such things, this useful poster is shipped folded instead of rolled.

If you have Head First Design Patterns (Head First) this poster is great overview that you can stick on wall and stare at it from your computer table.

I bought this poster in the idea that the book was really interesting.
The problem is that is badly designed. I'm not sure what others expect from it but for me I bought it to remind me all the constructions from the book.
A very fast guide in case you want to design.
I saw it as a post help for those that read the book. You can't put all the details on the poster but what you can do is put the guide lines.
Most of the UML drawings for different patterns are missing. There is just a simple definition in the box.
The text is very small and unless you are really in front of the poster is quite hard to read it.
If I were to design this poster I would put with in big letters the principles stated in the book and the UML drawings for each pattern and maybe a few sketched examples. Something that would be focused on helping the programmer remember the principles.
When looking at the poster you should not waste time to try to read from it. That is not the point. In my view if you want to check more details you grab the book and read it.
this is my view... I hope it helps.

Excellent book. Every book I've ready so far in the Head First series are Great.

It is a great poster, very clear and very big... still looking for space to put it on the wall :) it deserves to make space for it...

This is a nice addition to the book for a quick reminder of the patterns.

This is a nifty reminder of important design patterns.

If you aren't using design patterns, you should be.

If you haven't read Head First Design Patterns, you gotta get it.