Some day I may own a real pinball machine, but in the meantime check out these nifty pages:
Simpsons The Simpsons (PinMame emulated)
Star Wars (PinMame emulated)
Simpsons (real machine pictures)
Star Wars (real machine pictures)

Internet Pinball Database (information on over 5,000 machines!)
PinMame (Emulate pinball machines on your pc) FAQ (information)
Mr. Pinball website (information)