Smart Screen ON PRO v1.2

Smart screen ON is an innovative app which turns your proximity sensor into a
power button. If you have a big phone with no physical button on the
front(Galaxy Nexus for example, you can turn on or turn off the phone just
tapping or waving your hand (finger) on proximity sensor.

Features:

When you change the settings, [...]

More: http://mobilehere.net/2012/05/smart-screen-on-pro-v1-2.html