I intially thought about buying a mattress store and keeping my windfall in a mattress (not one on the showroom floor, but finally decided that would be a bit impractable.
Then, after reading what others have posted in this thread, seeing/hearing/reading about what others have done in similar situations, I have decided on the following.
First, I would hire one of the big name firms that specialize in management of other peoples money, and then an independent auditor to keep tabs on them. Plus insurance for protection. Plus a law firm on retainer for the inevitable nuisance suits.
Second, pay off all outstanding debts.
Third, I would find a new place to live, along with a cook,maid and gardener.
Fourth, I would buy a crew cab pickup, probably a GMC or Toyota, with a liftgate so I can transport boxes from my storage place (I don't really need heavy duty).
Fifth, would be surviving relatives.
Sixth, I would buy a Ford GT-40, not that I could ever bend down low enough to get in it, but because it would look so damned cool sitting in the driveway. Think of it as an object d'art.
Seventh, I would rent a aircraft and aircrew if I needed to go somewhere.
And last would be charities, after investigating how much goes into salaries and advertising, and the worthiness of the cause (I would support the Albanian Rat Fink over the Spotted Owl).
I could have a small room set aside so I could roll around on my money, ala Scrooge McDuck, but then everyone would say I had gone Quackers.

A weak government usually remains a servant of citizens, while a strong government usually becomes the master of its subjects.
- paraphrased from several sources
A choice, not an echo. - Goldwater campaign, 1964