Best Song Intros/Openings

[toef]

I'm sure we all have them... A few (or a lot of) songs where we hear the opening few notes, and immediately want to turn the radio/iPod/computer volume up.

Some of mine (perhaps by coincidence a lot of these I'd consider among my favorite songs):

Warren Zevon - Werewolves of London (the simple, but great, piano riff)

Led Zeppelin - Fool in the Rain (the song is just great from the opening cymbal crash onward)

Stevie Wonder - Signed, Sealed, Delivered (it gives you some time to reach over to the volume control, before the groove sets in)

Queen - Under Pressure (another one of my favorite songs, but I have to be careful that I don't end up blasting Vanilla Ice)

Derek & The Dominoes - Layla (no explanation really required)

Beatles - In My Life (probably my favorite song...all I have to hear is the first half of a note, and I turn it up)

I'm sure I could come up with more, but that's at least a start.

What are yours?