Just a quick plug for those of you who don't know about them already, thought I'd alert you to these cheat sheets:
I've got nothing to do with them at all - I'm merely recommending them because I'm impressed. You have to sign up (it's free) to get access but the cheat sheets themselves are very clear to read and very well put together - great for looking back at odd bits and pieces you might have forgotten about because you don't do them that often.
Note that I'm not recommending these as a way to learn programming from scratch at all - that's not what they're designed for. But as a quick and easy reference for existing programmers to refer to on certain topics, they're brilliant. Print them out and keep them close by, I certainly have!