Haha! That's Olle Hemmingsson from northern Sweden where my father-in-law grew up. He's a really a great swing jazz player, and he's performed on TV with a different "drummer." Here's another vid that includes an added percussionist -- a tändkulormotor, or a "hot-bulb engine" in English, which runs kind of on the same principal as a diesel engine. Apparently, it also holds down rhythm solidly as well.