This recent new yorker article gives some interesting background on wittgenstein's extremely neurotic (and intersting, of course) family. Apparently three of his four brothers committed suicide, as did one of his sister's husband. I personally didn't understand his books - I guess a lot of what was revolutionary in his ideas (language games?) had already been absorbed and taken for granted by the time I was born.

http://www.newyorker.com/arts/critics/books/2009/04/06/09040...