I have plenty of experience in trying to get into grad school! Err... but seeing as how I've not been accepted into any maybe I wouldn't be the best person to try and "help"
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From the experience I've had though (trying to get into physics grad school), I've found that none of the grad schools I applied to cared whether I was well rounded (they acted as though my 6.0 out of 6.0 on the writing section didn't even exist), helped the homeles... darn they didn't even care if I was a good person. If I was a neo-nazi with a perfect mathematics GRE test score and straight As then the first part wouldn't matter!
At least thats how it is in physics graduate school. Over, I'd suggest that you cut the extra curricular stuff as you should keep your statement of purpose (not resume) down to a page or page in a half at most. If you place extra curricular stuff on there, make sure that you ALWAYS tie it back to the subject you are trying to get into and use everything to build the argument that you are trying to get into a certain specific field, why you chose THAT particular graduate school given your desire to go into that field and prove that you are capable of being successful at achieving success in graduate school pursuing your studies in that field.
Oh, and while you're at it don't forget to score good on the GRE! Meh, ignore me though, because I've yet to get into a graduate school.
-Pascal