Best rock song intros

Does The Hellion by Judas Priest count? Its an intro but on its own track.

N.I.B. - Sabbath (since guitars are for silly little girls and the bass is Almighty).

Territory - Sepultura

Holy Wars - Megadeth

Know Your Enemy - RATM

Desecrate Through Reverence - Avenged Sevenfold

Intro to Reality - Anthrax

Johnny Quest Thinks We're Sellouts - Less Than Jake

And my guilty pleasure:
The Downfall Of Western Civilization - MXPX