When we got an HD TV about three years ago we bought a PS3 as a BluRay and DVD player and I started playing some games on that. Have since got hooked on games like GTA4, Assassins Creed, Prototype and currently Red Dead Redemption.
At some stage I will replace the laptop and have been looking at the current crop of gaming-friendly lappies. However the fact is that I hardly ever play games on a PC any more. I was just looking at Metacritic to see what are the current highly-rated PC games - and there really aren't any. Whereas PS3 and Xbox have many games that rate in the 90's on Metacritic, the PC platform has nothing recent that rated above 87. Metacritic puts PC games in a category called "Other Platforms" along with the likes of N-Gage and Dreamcast.
It seems that PC games have been relegated to an enthusiasts' corner while the consoles reign. I don't think I really need a gaming-friendly laptop if/when I replace this one.