GroupMe lets users effortlessly group text with the people in your life that are important to you. It's your real-life network, in your pocket. It's totally free and works on every phone.
Ken Shirriff has performed a teardown of Apple's iPhone charger and found it to be a high-quality power supply designed to produce carefully filtered power.
Papers puts your research literature database in your pocket, and at your fingertips; whether you're at a conference, in class, visiting your peers, or on the road.
My Golf Bag allows golfers to measure the lie and loft angles of their clubs and store them on their iPhone or iPod touch. iPhone/iPod touch wielding golfers can now get some serious golf geek "cred" on the range or in the boardroom.