This guitar-keyboard band video got its audio removed and overdubbed with quite funny playing that really sounds like what you see the musicians do with their instruments.

If you're a musician, then it's really funny. If you're not, you might not get the humour.

http://www.youtube.com/watch?v=SAPHu7yDB9Y...feature=related

He's done many more, usually with famous guitar players. Go to "more from this user" to check them out.

ROFL!!!!! [size="6"][/size]

The best one yet?

http://youtube.com/watch?v=Cz9g3ymsDk4

(Paco de Lucia)