

I'd go back to the time of Jesus I suppose, in order to see if it all actually happened as the Bible states.
Then I'd nip to see how the Pyramids were really built.
If I could change things, I'd simply hoard sh*tloads of old money from Antique shops, etc, go back in time and setup a bank account in my name, and insist that it remain open until such time that my namesake (which would still be me) cleared the fecker.
Failing that, I'd nip back to Ancient Egypt, Rome and Pompeii, nob the good looking birds who fancied a bit (well you would, wouldn't you!?

I'd be rolling in it, yet wouldn't be infamous like Bill Gates, etc.