Watch the Groovy online guitar lesson by TrueFire from Play Rock Guitar 4: Rhythm Principles
Groovy - Lick 27 is a video guitar lesson presented by Angus Clark and is sourced from Play in the Style of David Gilmour.
Here's some Meddle
-era type chording that is one of my favorite grooves ever. The part is simple, but makes use of a muting style that Gilmour used to great effect on a couple of classic tracks. It's very aggressive and percussive, so get up on the down beat!