Song intros that really grab you? ?

Rolling Stones, either "Brown Sugar" or "Start Me Up" (since they're roughly inverses of one another). Guess I give the nod to BS, because I heard it first and SMU loses points for being used in a Microsoft ad.

Second the nomination of Yes "Roundabout." Also, "Siberian Khatru" from "Close to the Edge"

Others that come to mind:
Santana, "Europa (Earth's Cry, Heaven's Smile)"
Hendrix, "Little Wing" and "Purple Haze"
Buffalo Springfield, "For What It's Worth"
Jefferson Airplane, "Volunteers"
Neil Young, "Rockin' in the Free World"
Mountain, "Mississippi Queen" (gotta love The Great Fatsby)
Ten Years After, "I'd Love to Change the World"
Beatles, "Paperback Writer"
Paul Simon, "Late in the Evening"
Eric Clapton, "Layla" (or about half of the other songs on that album...)

And on and on ... isn't music great? Happy listening!

How can I list so many and still forget to put down Led Zeppelin's "Immigration Song?"

Or Three Dog Night's "Eli's Coming"

Like I said, "and on and on..."

Bob Dylan: Ballad of a Thin Man, Like A Rolling Stone & Positively 4th Street
Schubert: Gretchen Am Spinrade
Mahler: Der Abschied from Das Lied Von Der Erde
Van Morrison: Dylan's It's All Over Now, Baby Blue
Miles Davis: All Blues & So What
Beethoven: 6th Symphony, first bars of first movement
Coltrane: A Love Supreme
And ditto with Crazy4Blues: numerous songs by Otis Rush

•Mr. Magic by Grover Washington Jr.
•Soul Sacrifice by Santana
•Song for my Father by Horace Silver
•Ain't No Fun to Me by Graham Central Station
•Telephone Song by Stevie Ray and Jimmy Vaughn

Most notable one chord (if you wanna call it that) intro! - Hard Day's Night.