I'd say so. It didn't have the same impact on me that GTAIII had (that game blew me away) and there are loads of things that could make it better (alot of which were in the previous games
) but it's still a brilliant game.
Read (or watch) reviews of it around the internet to find out a bit more about it - rent the game if you can (there's no better way to find out whether you're going to like it or not, than actually playing it for yourself). If you've liked any of the recent GTA games, I'm pretty sure you'll like GTA IV.
Phenom