Yes, this is Jerry Garcia in a poncho playing guitar on a Hugh Hefner TV show from the 60s. There are various stories about this gig. One is that the boys dosed the other guests including Hugh with LSD. The other is that the electronic equipment and the speakers on the stage behind the band are totally fake - they are props. I am not even sure if they are really performing this tune or lip synching it. Nonetheless, I find this stuff wicked interesting because it gives us a glimpse of american TV from the 60s as well as rare video coverage of a much younger Jerry Garcia.