you're rich, now what?
strlen: Get a house in the Santa Cruz mountains large enough to hold a decent sized library and a miniature lab/computer history museum, invest the money to get a speedy Internet connection there. For the next few years spend the rest of the time reading, writing code (especially code that can't immediately be "something people want": design and write programming languages and OSes "just for fun") doing photography (build out a proper studio and dark room) and collect historical/esoteric hardware (e.g. PDP-10s, VAXen).Then in few years, attempt another start-up (but without risking my entire wealth on it - won't put more $100k into it) and if that fails, take a job (without regards to pay or seniority of position) at a research lab / university / technology company I believe in.