CPU and GPU - the horror
I'm a hardcore gamer and the logic of merging the two is disastrous (then again so is being a hardened gamer with an AMD chipset.) you would need water cooling just to cope as a LAN session of 24 hours are going to leave you a smoking melted mass of a CPU.
GFX are the upgrade items, everything else is fairly steady at being released, linking the CPU to it means you can't just take out you 8800 card and put in a 9800 card, you have to go back to the mother board and do the whole thing, taking hours out of your day and costing a lot more.
Not to mention AMD / ATI gfx are crap. Any seasoned gamer worth his salt wouldn't risk it compared to the NVidia's range of cards. Neither would they use a laptop.
...but for casual gamers who play solitaire and old games from the late 90's, which AMD are good for, having the two merged might be a good idea, free up a PCI slot for your wifi, network, tv card etc.