Ten years ago Mr. X to the Z was one of the fiercest, rawest rappers out. Now most people probably know Xzibit as the fun, goofy Pimp My Ride host on MTV. While it's true that once you do reality tv it'll never be the same, I dug this video of Xzibit performing his second single "Thank You" on Letterman last week. I'm not claiming that it's at the level of his earlyr work, but it is better than what I expected especially after hearing the first single "Concentrate". Also, the mini orchestra is pretty cool.