Who is your most famous, infamous, or interesting relative?

[PeterB]

I had an uncle (no joke) who wrote a book, some would say THE book, on quantum mechanics. Interesting in no small part for the fact that he was a bio/organic chemist, and not a physicist.

And one of my nephews is slowly but surely making a mark as a filmmaker. He's got a documentary which is currently at #5 on iTunes list of documentaries. I haven't seen it myself yet, but I've heard it's good and the reviews seem to agree.