Graphically, there is a lot to like in this game. The cities are modeled beautifully, including pedestrians that jump from in front of your car just at the last second. The game also sports a smooth frame rate of 60 fps.(Except in certain parts when a ton of action is on the screen, then it drops drastically. But right afterward, it shoots back up to full speed.)
The sound is also top-notch, with music by The Offspring and Bad Religion. In my opinion, the song All I Want, by The Offspring, fits the tone of the game perfectly. The sound effects are cool as well, as customers yell at you to pick them up, and then complain that you're driving too slow. But sometimes their language gets out of hand. Sorta. Therefore, the game has a Teen rating.
Overall, if you're looking for a game with loads of fast-paced action and excitement, and also one that lets you be a real-world cabbie, without having to break your bank, then you needn't look much further than Crazy Taxi. It's one of the wildest rides you'll ever take.