I have:
Android (phone v.soon, next week hopefully) and AndroidX86 for my tablet PC
Linux (1 outstanding Ubuntu 10.10 x64 box to be converted, 3 Linux Mint 11 x64 boxes)
Gameboy, DS, Wii
PSP with cfw
Windows BUT it has been 9 months since I booted that thing and don't see it happening any time soon, so I didn't vote for it.