iTunes now has an app which allows you to take those selfies without having to hold the phone out in front of you. Named CamMe, the app lets you put the phone down in front of you and is activated by hand gestures.
If you are a selfie taker, this may be what you've been waiting for and it's free.
Also, the app WolframApha is a knowledge based search engine which lets you type in or verbally ask a question about anything and the answer will come up. What got me interested in this app yesterday was being able to ask: "What planes are over me right now?" And a list of all the flights by name and number came up. I don't know why this fascinates me but it does.