So I've been an avid iPhone user for many years now and I currently own the 4S. However, I hardly ever get around to using all the features and I know I'm missing out on some cool stuff. Plus, my boss just got an iphone and he is looking for any tips and tricks out there. Does anyone have any really cool shortcuts, tips, app suggestions? I'd be interested to read about them all. I am composing a short of cheat sheet for him and I'm sure I have plenty to learn too.