ps3 to pc?
Yes, it is possible to play PS3 games on a PC using emulation software.
no
Emulators?
The latest console I know about is the PlayStation 2, which I believe is the most recent one.
Some developers focus on creating emulators, though performance remains poor across all systems because they mimic PPC on x86/AMD64 architectures.
Not currently available for use, expected availability in several years.
PCSX2 FTW
wii
There are Wii emulators available for play.
It was possible to play Mario Kart on Wii using an emulated version, but some textures were absent or incomplete.