i don't think the crying thing would make a difference because children that young don't have the ability to feel sympathy. they can't make the connection between their actions causing real distress for a while yet. i don't think that develops until around 2ish? right now it's just funny to see mommy react. i don't think crying and trying to communicate it will stop the biting, though it is probably important to still try to show him that it hurts you because it will help him learn communication skills.
anyways, about the biting. what i would do is stop whatever activity is going on when the biting happens. if you are holding him and he bites you, i would put him down. if you are playing with him and he bites you, i would stop playing. if you are feeding him and he bites you, i would cut the meal short . just for a little while, maybe 5 - 10 minutes. I think eventually he will learn to associate the biting with the enjoyable activity ending. he won't want you to put him down, or stop playing, or stop eating, and if he knows that is what happens when he bites he might stop.
good luck! if you decide to try my advice tell me how it works.