A few of my favorite relatively unknown apps Lux dash - there is a free and paid version, it is basically an app to take control of your backlight. You can define how bright your screen will be depending on the lux reading of our light sensor. The paid version also allows you to have the screen dim further than stock allows. So far i have loved this app, the extra control saves me more battery and saves my eyes in darker settings. Screebl - this was one of the original awesome apps way back with the og droid days. Honestly i feel this is better than the app that the s3 has for keeping the screen on. Im sure the orientation sensor uses less resources than the front facing camera. oh by the way, screebl keeps the screen on it is oriented within a user defined range, and when out of range it turns off. Ivona text-to-speech - for those of you who dont really like the robotic voice of your android, this app is great. The voice sounds very realistic and is much more pleasant. This app has been beta since ive ben using it for about a year, and since they are beta testing they provide it for free. Mighty text - this app allows you to send texts using your computer through a browser. if you spend time at a computer and would rather send and receive your texts on your computer this is great. It is not a stand alone app but it talks to your phone using your gmail account. That's what i've got so far hope these help you guys enjoy your phones even more!