Yes, they had a few people drink beer then hard alcohol on two different days. Their reaction times, fine motor skills and hangover were measured, if that's possible. One guy was loaded on beer and yet seemed much more in control of himself on spirits. They didn't do wine.
Now that being said, while the show was interesting, I wouldn't take it as absolute truth. I'm sure there is much more indepth studies done, but it was interesting to watch nonetheless.
My favourite classical musicians were all on Absinthe. I tried it just because. Thought maybe I'd get inspired to be creative... ha ha ha. The stuff they sell in Canada is much less strong than the stuff they drank and like Walter said, far less polluted.