http://www.crowdrise.com/ - Crowdrise is about giving back, raising tons of money for charity and having the most fun in the world while doing it. 
 
 
 
Yelp
Find restaurants and other nearby establishments, complete with user ratings. Now integrated into Apple Maps, though you might have better accuracy within the Yelp app itself.

 
 
 
ABSmatic - Do you want sexy six pack abs but don't want to work out? Now you don't have to introducing ABSmatic! The only tool you need to get awesome abs without doing a single exercise.