It does depend tho, on what sort of gaming experience you are looking for, for example, the pc will give you the best gaming experience you can afford, provided you buy the right hardware, E.G. proccessor, graphics card e.t.c. Thats kinda obvious tho.

Whereas the console will give you games games and more games, they wont do as much as a pc will, but then neither will your pc if you just use it for games :P. Take the 360, thats now got media center built in to it, audio, video, tv streaming. And has 3 proccessors (technically 2 but..) to process graphics, audio , gameplay and whatever else you need. (btw, when i say 2 i mean 1 dual-core processor and GPU)

And then there's the Wii, thats just awesome! Great gameplay experience and anyone and everyone enjoys it. The graphics are quite good, but the 360, ps3 and high spec pc's will quite easily beat the wii. At the end of the day though, graphics arent always essential to have a great game. (getting hit in the face is fun tho!) (crazy mum cant play baseball :P)

So yeah, it pretty much depends on what you want really.