I'd be living a lot better than I do today, but I certainly wouldn't be sitting idly around doing nothing either. I just don't think I have it in me. Probably running a business of some sort - maybe a non-profit or charitable business of some sort (if money weren't an object and I could really focus on it and give it the attention it needed).
I'd certainly enjoy the free beer too.
Probably look into setting up a few scholarship funds for kids too. I don't know if I'd get into politics. Don't really have the stomach for it, much as I'd like to get in and dismantle our stupid bloated bureaucracy from the inside-out. I'd probably stress over it too much. Better for me to just support someone with more of an aptitude for that.