Song With Best Beginning

Street Life by the Jazz Crusaders. listen to the opening. wow!

"Under My Wheels" - Alice Cooper
Dweller

I use the intro as my ringtone.

How about Mott The Hoople's All The Young Dudes. No doubt what song is coming with that intro.

Lust for Life by Iggy Pop has a great intro

"It's a quarter to three......"
from "One for My Baby(and One More for The Road)"
by Frank Sinatra

In my humble opinion, when it comes to an extended intro, nothing can possibly beat "Shine on You Crazy Diamond," with "Riders on the Storm" close second.

As far as kick-ass intros, it'd be hard to beat Metallica "Master of Puppets," Alice in Chains "Would," and Slayer "Seasons in the Abyss." I've always loved Iron Maiden "Wasted Years" with a sick riff as well. Reading most of the choices listed, perhaps I have different notion of what a "best beginning" is.