Song With Best Beginning

Bruce Hornsby "The Way it Is"

Ben Webster - the song Soulville from his album Soulville, 1st song on side A. Bluesy intro before Ben's sax comes in.
Perfect name for that song and album, btw.

Whipping Post ........ Allman Brothers Band Live at the Filmore East... It doesn't get much better than this. One of the all time great song beginnings.

Aurra's "Are You Single?" The electric bass is fantastic and begs to be turned up.

Faze-O's "Riding High." The keyboard sets the mood and ambiance for the rest of the song.

On a related note, there's also a whole subcategory of spoken intros. Some notable examples:

Patti Smith's cover of "Gloria" - "Jesus died for somebody's sins, but not mine"
Kid Creole's cover of "Oh, What a Night" - "Hey Frankie, I had a night like that, too. Let me tell ya about it."
Prince's "Let's Go Crazy" - "Dearly beloved, we are gathered here...."

Marty