Ask HN: What would YOU do with a massive amount of computing power?

Let's say you're given a million dollars worth of cloud computing services, or perhaps you've gained control of a large botnet (e.g. Conficker, which I read has between 9 and 15 million nodes). What would YOU actually do with it?

I have some ideas, but I'm curious to see what yours are.

Here are some things that that I do not find interesting, though: spam (evil), next Mersenne prime number (boring), SETI (stupid).