One of the things I've noticed with a few zombie hunters is the over-reliance on their upper body moves to take out the threat. Granted, being strong up top has its advantages, but you can't forget that your strongest muscles are your legs. Rebecca and Sarah have a great move that manages to knock down the Z's without serious threat to themselves.
Sarah will wait for a zombie to come close enough, and she will typically kick the silly thing in the chest, knocking it back and off it's feet, making it a much easier kill. Rebecca will generally do the same thing, and I have to admit it has its merits. If you kick it in the chest, it's head might snap down, but it won't have the reach to get your foot. You have to be careful, though, because if you kick it in the stomach, it can fold over on your foot, and then you are royally screwed.
If the zombie is particularly tall, and there will be a few of them, a jump kick works just as well. Just watch your landing because it royally sucks to land on your ass after you have just executed a perfect zombie take-down kick.
Round house kicks work pretty good, but they work best against the shoulder. You goal is to knock them down, and avoid the teeth and hands.
When push comes to shove, sweep the knees. They will fall back and you can jump on them to finish them off.