The clinic clips are hilarious. He's basically sitting there noodling on a guitar (the Peavey model they made for him) giving a stream of consciousness monologue (which is at times insightful - say what you want, the guy is in touch with his feelings - and at times hilariously off the wall - his inability to pee in public). Interspersed with asides like "Is this what you do at a clinic? Wait, should I wank some more?"
There's also a clip on the Contain Us DVD that I call "Devin Unleashed" that is just some sick, massive technique guitar playing - I knew he was good, but that mofo can flat out PLAY - that he immediately dismisses as something you play when you're a dungeon master in 12th grade and have nothing better to do, or something like that, then he talks about the development of his art. You have to wade through the nonsense, but there's some real insight in there.