How old is your kitty? My 10 month old gives me little 'play bites'. I have found that instead of trying to pull your hand away (which seems to encourage biting), just RELAX your hand, and they lose interest. Then you can slowly pull your hand away. There is a reason for why cats do this, something that's intstinctive when they play/fight with each other. The cat that 'gives-up' or is defeated, relaxes to signal to the top cat to "let me go, you win!"
I can't explain it very well, I am sure that some of the other cat people here would do better (like 4 feline house or spencer).
Kedi, Wylie, Rudy, and the dog Scout!
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