*RUMOR* Ability to play PSP games on the PS3 coming.

[superchunk]

That would be stupid.

There's a reason Nintendo hasn't put Gameboy era titles on VC and has distinctly different download options between DSi and Wii. You don't want to make your products obsolete. You want that Wii owner to go buy a DSi. Just as Sony should want PS3 owners to go buy PSPs.