Although it's certainly not a "must," demo videos that feature big-name guitarists who happen to be great teachers have that extra element of "cool."
Case in point: The guys at TC Electronic have posted this demo video featuring Paul Gilbert.
In the clip below, you can watch Gilbert — with his signature Ibanez guitar and Marshall amps — as he demonstrates the company's Ditto Looper pedal, direct from his home studio in North Hollywood.
Gilbert dives into some AC/DC ("Back in Black"), explains how the Ditto Looper helps him play in time, then jumps back into "Back in Black." At the 2:31 mark, he borrows from Jimmy Page, inserting a phrase from the "Good Times, Bad Times" guitar solo.
Anyway, enjoy! For more about the TC Electronic Ditto Looper (which is only $99.99 at the moment ... just sayin'!), visit tcelectronic.com.