Although it wasn't my personal favorite, Grand Theft Auto: San Andreas was undoubtedly the most accomplished of the three classic PS2 entries.
With RPG-like elements (i.e., if you worked out, you'd get all muscular, and practicing shooting with specific guns made you more accurate), an appropriately huge world featuring both cities and outlying suburbs, and a solid story, San Andreas is a definite must-play for all hardcore gamers.
But if you missed out or you'd simply love to play it again, you can always download it when it hits the PlayStation Network tomorrow. We figured this was coming, as the ESRB rated the game back in October; now, as announced over at the PlayStation Blog , that it'll be available as of December 11. They didn't provide us with a price, but it'll probably be $10, as other games have been. Speaking of which, GTAIII is already downloadable, and we're all assuming Vice City (my favorite) will show up soon, too. And that, of course, will be highly recommended.
Yes, it's true that GTAV will be very different, as GTAIV was. So if you want that arcade-y, over-the-top insanity, you probably have to stick to the old-school GTA adventures.
Related Game(s): Grand Theft Auto: San Andreas