Yup. You can make a laptop a gaming machine, but it will cost an arm and a leg. Most people when going that route buy the best laptop money can buy, but remember that laptops can only be upgraded so much. They are limited as compared to desktop PCs where you can virtually turn those into servers or high end workstations. But a majority of the mid range laptops can play games but not the intensive high res games like half life, Doom 3, etc. My advice is to use the laptop for office/work use because of its portability and get a hgh end desktop for whatever you want to do.
I've actually heard better stuff about the small (3000 series) Averatecs than the larger ones... One of my friends has 2 of them(well, his sister has one) and both are apparently great.