Forza Motorsport
 

Just when you managed to finish up that racing simulation game and free
up some time to fix that leaky gutter, Microsoft releases a new racing sim
that promises to eat up even more hours of your life, and leave the
housework unfinished. Forza Motorsport is the most realistic, detailed
racing game for Xbox to date. It features hundreds of incredibly detailed
cars, and the most realistic racing physics you can find without heading
to a local autocross. Of course, there seems to be another racing game
that has all of this, so Microsoft decided to add in an impressive
collection of both “show” and “go” modifications, reactive AI, damage
modeling, and impressive online play just to set itself apart.

URL: http://www.bytesector.com/data/bs-article.asp?id=494

great game, rocks in splitscreen, too bad there aint no replay function when playing in splitscreen;

take Mustang GT , disable all driving aids except for ABS (just takes away the fun, really) and go powersliding around the course :)

same applies in GT4 also, same car, same track, same fun; we swapped from Xbox to PS2 and were enjoying us no matter what the platform. PS2 has slight edge due to "coolness" of the replay-value afterwards, and the wider range of vehicles.

xbox has nice "best lap" times, and the categories make picking competitive cars for splitscreen easier then GT4's mix&match system.