You can still do that with a PC,plug PC into plasma and get yourself one of the wireless 360 modules for the PC and use your existing wireless 360 controller!
I know what you mean though,sometimes the plug and play aspect of the 360/PS3 hits the spot. It's all a bit hypothetical anyway,as AC2 hasn't had a PC release yet and when it does it'll be months later than the console version!
I just wish the PC and console development of games could run parallel and have simultaneous release dates( Dragonage did iirc) It seems as though us PC gamers are being teased at times. I suppose there is financial gain for the game companies by staggering releases,it doesn't make it any less annoying for us PC gamers though.