That would be an interesting competition.
reporter: With me now is Tom who has just booted a computer inside a computer, insiiiiide a computer sixTEEN times!
tom: Yes, it took about a year to boot the last layer of nesting and takes nearly 2 hours to run ell ess, but it was totally worth it. I'm really excited.
reporter: And what do you want to do with it now?
tom: In a couple of years, I hope to be up to 17 layers, and it's my life ambition to get up to 32.
Seriously though, if I was to do such a thing, I'd put it in a VM to begin with. So at least then I could pause and resume the VM on different hardware so that I could continually upgrade the hardware as newer stuff became available. Now what would be really cool, is to implement hibernate (or suspend to ram and dump the ram) so that the browser could be changed out without rebooting the JSVM. Now that persistent storage is sorted, perhaps that isn't too hard?
The next thing I'd do is try to automate as much as possible. Because once it starts slowing down, it would be pretty frustrating to interact with.