Watch the Ice Man Rhythm online guitar lesson by Oz Noy from Twisted Guitar: Blues Rhythm
Here I'll perform "Ice Man Rhythm" for you. It's basically a song with one chord - A7. It's kind of reminiscent of Albert Collins 70's funk-era, mixing blues, funk, and R&B.
It may sound easy, but there's a real art to playing rhythm guitar in the pocket, and playing the same repeating rhythm with the same intensity.