Let's see...
First I would pay off all the debts that my family currently owed including their mortgages so that they could have much more freedom with their money. For anyone in my family that didnt own their own home I would probably buy them one. I would put money aside for each of my younger cousins and nieces and nephews for their education. After that I would pay for my entire family to take a vacation somewhere like...the Mediterranean.
Once I got that out of the way I would purchase one helluva home somewhere in the Walnut Creek hills and then furnish it and of course the obligatory motor vehicle fleet. A luxury sedan, an SUV of some sort, a sports car, and something to go play in the mud with would start off nicely. After that a few ATV's, a couple jetskis, and maybe a pair of boats would do nicely.
Once I took care of my personal needs I would donate a large chunk to the Leukemia Research Foundation so that hopefully no one else would ever have to lose a loved one to the disease. After a bit of local philanthropy to various organizations I would probably look into buying a sports team and then invest the rest so that I would always have the means to take care of those I loved. I think the Oakland Athletics would do nice along with a new stadium down in Jack London Square so that they could get the revenues to compete.
After that who knows? I really have no idea how much money it would take to accomplish all of that and so it's hard to say what else I might do because I might have spent all of the money long before I finished those things off the top of my head. Okay, thats about enough for now. Thanks to anyone who actually read all of that because I can't sleep tonight and I'm hoping that I can tire myself out...