C#, Open Source
Do you use open source software? Do you ever modify it? Do you know the rules? I rarely do, rarely do, and barely do. But, that may change to a degree at some point. This book, highlighted on Slashdot, supposedly covers some of the legal responsibilities that come with using software licensed by the BSD license, or the GPL. Might be useful if you’re in to that sort of thing and you don’t want someone like SCO annoying you. Note, I haven’t read it, so this is not an official endorsement.