This PSP hack is exciting, but of course there are limitations running Windows 95 on the Sony portable.
Mattan writes on his site:
"Windows 95 actually runs quite well but don't expect it to be a speed demon. It takes about 10 minutes to boot but afterwards it's pretty usable. I was able to do things like: open "My computer" and browse the virtual hard drive, complete a whole game of Minesweeper and run various other applications. "
Apparently the port is well enough to play Windows Mindsweeper on the Sony PSP. Mattan has the instructions and the download for his Sony PSP Bochs port available here.