Ok, I made the best tasting burger I've ever had a few nights ago. I got most of the idea for it from Myron Mixon's BBQ book. Basically they are smoked burgers finished in a skillet. 1 lb ground meat, I put 2.5 tsps bbq rub in it, and a few splashes of Worcestershire sauce. Mixed it well, formed patties, put them in an aluminum cake round thing, and then on the smoker (apple wood!) at 300'F for 30 minutes. Once out of the smoker, the patties went into a skillet with butter & olive oil, for about 3 minutes per side, just enough to get some good burning/bark. In a toasted bun, lettuce, cheese, mayo, ketchup. that's the best burger you will ever have. Sure, it sucks taking over an hour (get smoker going, smoke them, then finish on skillet) to make a burger, but the flavor was insane. Smoke rings in a burger!