I love video game intros!
Ultimate nostalgia:
My favorite video game intro probably goes to Wild ARMs, which has great music and is animated very well:
I'm surprised nobody has mentioned Crystal Chronicles so far. The intro was easily the best part of that game.
I've always loved the intros for Way of the Samurai 1 and 2, especially since the music is so weird and randomly shifts and changes:
Onimusha 2 has a pretty great intro. It starts off kind of weak, but gets pretty fun when it starts introducing all of the characters:
But the award for most badass intro has to go to the Dynasty Warriors games. With each installment, they just grew more and more ridiculous: