This is SRV at his best, absolutely on fire.  If you need a reminder of SRV's brilliance,  or happen to know some poor soul who for some reason isn't familiar with SRV or know what he was about...... this is all you need.  The dirty small club nature of this video is what makes it a classic, very intimate and real.  All the positive reviews are right, this is a classic every guitar fan must own.