The Watering Hole

Pat Metheny doing a warmup - very cool!  Just curious if anyone knows what he's doing?  :-?

http://www.youtube.com/watch?v=QcETmST9BoY&feature=player_embedded#!

Sounds like he is cycling through scales, arpeggios, and doing some things linearly and some thing within a chord shape.  He's doing a lot of things in short.  Killing all the birds with one stone.