£3.49 on the PSN store for Crash Bandicoot, to play on your PS3, it's great. ;)
My favourite console was the Sega Master System II. I had Sonic the Hedgehog built in and I also played Ninja Gaiden, Putt and Putter, Mortal Kombat and Mickey Mouse's Castle of Illusion.... ohh and Alex the Kid but that was built in to my friend's console.
PS1, some good games on it, and it pushed forward the barriers of not only console gaming, but PC gaming as well.
Never really got into Nintendo side of things, although the Wii (my nephews got one) is brilliant. If they bring out the HD version of it, it could leave everything else standing from an entertainment value perspective.
Currently got a PS3. The graphics are amazing (MGS4, GTAIV etc etc) and the gameplay is good. But its always the earlier games people think back to, as these were the ones that set the standard.