my gf has a dell inspiron 8100 with a 64mb (ddr) mobility radeon 7500. it's nice. after she got it they came out with the gf4 440go, which is even better. now you can get em with a p4 2ghz or something and a mobility radeon 9000.
the only gripe i have about it is the plastic case feels fragile, but no problems with it at all.
whatever you do, don't get a laptop with a gf2 go... it's horrible.