Very smooth, but your sense of momentum is a little out. Mostly when he punches, it's not as bad in the second one, but overall they're pretty nice. :)
The animation was nice.The only problem here is when the stickman took his first step, it seemed like it jumped without building up force downwards. I think that you have to add more frames at that part in order to show the viewer the indication that the Stickman is actually taking a step. Also, add some momentum...
