Basically, they are Jazz chords with 4 notes.

Intro
AM7 Bm7 C#m7 Bm7 AM7 (oooooooh)
-----------------------
-5---7---9--7--5--------
-6---7---9--7--6--------
-6---7---9--7--6-------
-----------------------
-5---7---9--7--5--------
Next in the verse just go up the chord scale, then back down... I love the riff at the end of the song, but I've never tried to play it.