Trip to the US, any recommendations?

Hey there!

I am from germany and will visit the us from 1st to 8th July as a work trip. During that trip i have 3 days to spare in NYC and would like to ask for some recommendations for a IT junkie like me! ;)

I am going to visit all the "standard" sightseeing places, but maybe you have some secret spots which i should not miss during my visit. Or maybe just some advice. Would be great!

I will also visit one of the Apple stores to buy an iPad Mini for my wife, except somebody has a better alternative (for the store, not the iPad! ^^).

So, thanks in advance!