Quite possibly the best racing PC game ever made
The game, for those who don't know, is a mixture of free roam map racing, stunt racing and good old fashioned street racing. There are hundreds upon hundreds of different stunts, jobs and collectibles to discover, which makes it that much addicting to play. One of the most amazing features is the option letting you to set the time in the game match the real time, in the real world, or take down races, in which you have to take other racers down.
I was positively surprised with the music. There's a little bit of everything, but all of the tracks are great racing tunes. Even Girlfriend by Avril Lavigne fits right in. Absolutely everything about the game is addicting. It's an absolute must-have and an instant classic.