Is only #2 correct here? I did a google search and with 'don't' I have 10 times more results. Why is that?

http://www.google.ca/search?hl=en&q=%22why+don%27t+one+of+you+guys%22&btnG=Google+Search&meta =

1. Why don't one of you guys do it?

2. Why doesn't one of you guys do it?

1 2
Now, this is a really interesting one, Jack. I am sure that most native speakers say #1, because they are speaking to several people ('you').
So they both don't have the same meaning? #1 for a group? #2 for a particular person?
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No, they mean the same. What I find interesting is that in use the grammatically correct one doesn't is overriden by the logic of the situation.
Dear friends,

It is interesting. There are many examples. Many are illiterate in other ways. It is most strange if we are to regard them as arbiters of language.

I do not know that we need heed them. Emotion: smile

Kind regards, Emotion: smile

Would it be the same with "to be"?

1. Why isn't one of you guys opening the bottles?

2. Why aren't one of you guys opening the bottles?

I don't think 2. would be that frequent...
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Aren't gets twice as many google hits (why isn't/aren't one of you). Candidly-- I habitually use the second person verb form, I'm afraid.
And do they open the bottles?

I guess my English needs a little revamping... Emotion: smile
There is a word for it: notional concord.
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