Halo 3 is possibly the best of it's series. It has amazing guns, banshees and a multi-player system. However, people tend to lose the true reason why halo 3 was rated 9.6. It is because of the music, the singer in the back who goes ooOOooooO. Other than that, halo 3 sucks and it would be rated in the negatives without the amazing singer.
The guy who goes OOoooOo in the back. Basically Halo 3's music.