I'm kinda with Damien on the whole live off the Interest thing..
Though with 100mil you could easily hire other people to manage your money for you ..So you still would do nothing , just sit around and watch the money roll in..
I would no doubt buy a nice plot of land somewhere ,10-20acres at least. Maybe start up a little hot rod shop or something from home and spend my time traveling around the world finding/buying rare cars and parts and building my own customs. Create my own brand then sell them, not so much for profit but for my own entertainment.probably build a race car or 2 as well.
I'm assuming last night has jackpotted again then cause I didn't win it.