Obviously PC is my favourite, but I did not vote for it as the question asked which gaming system is best. PC's can do heaps more than gaming systems (edit pictures, make documents, browse internet, do your homework, instant messaging, play music etc etc etc PLUS gaming), but out of all the consoles, Nintendo has been a firm favourite with me ever since I was a kid.
I had a N64, not a PS1, and enjoy playing the more 'fun' Mario styled games with the funky controllers rather than the hardcore shoot 'em up 'more realistic' Sony equivalents. Then, when the Gamecube came out with its stunning 64bit processing power, I just had to get one, and enjoyed playing heaps of both multi console release and more light hearted Nintendo games on it for ages.
Now the Wii is out with its amazing wireless 3D controller technology, it is one of the most advanced gaming systems on the planet, and can even play gameboy and Gamecube games (like the PS2 did with PS1 games) and is high up on the 'I can't afford this but want it real bad' list for me
