This caught my eye emotionally

Captivating desolation

DSLR-like app 'Camera FV-5' for Android users

Not sure where I first came across this app, but it is the best Camera app out there.. take a look at least here http://www.camerafv5.com/index.php

I have learnt more about my GS2 and GNex cameras from this app than I dreamt was possible. Read more about it here on the Play Store and watch the great tutorials on YouTube.