the first one's physics were way off and it didn't have enought force in the kicks. It just looked like he was spinning. Also, it needed a ground, so that your people weren't wobbling. Pretty good on smoothing, and the easing could have used work, although at one point i did recognize a good usage of it.
Second one, was pretty good with force behind hits, but at multiple parts the characters just flipped horizontally. You should learn how to make them turn in a 3D manner instead. Every now and then it was choppy, or skittery, but otherwise it was fairly smooth, and well eased(could be better of course, always room for improvement).
The third one, was your first, so theres no use in me criticizing it now is there? If I were to say anything, it would just be work on the choppiness and the effects (changing colors, slow motion, phasing into view, etc, etc.)
all in all, they are good. Smooth, i suppose, in places, well eased in others. But I would have to say you are a beginner. And if someone were to disagree with me, I would have to say that even if you weren't a beginner, I think you could still learn more from staying in the beginners section. Learning off your piers and such.
EDIT** and if any parts were VERY well eased and smooth, I would have to say it's the drunken boxing parts. Very good IMO.
EDIT#2** Oh, and you should probably practice alot more with physics if you are going to pull off a realistic drunken boxing. Lots of balance is needed in that style, so if you want to reflect that in your animation, you will need to be very precise.