I think in a few years the pc will reach its limit and alternatives for more power will have to be brought into production. Alternatives such as living matter or chemicals. I dont think we will ever develope an artificial intelligence, it's just a dream.
I reckon it'll be the nerve centre of almost every house. TV and radio will come via the PC to screens and speakers around the house. Home security, central heating, air conditioning, cooking etc. will be controlled from here. PCA's Helproom will have questions like "How can I set the cooker to come on at 2 in the afternoon at 220°C? I'm using Windows XZ and Ainsley Harriott's EasyCook RAM stick." Oh and people will still play games and write letters on it.
madPentium, I already know a few people with artificial intelligence ;O)