I recently found myself in a dark room with my iPhone and a cold pint of lager. For reasons still unclear to me, I set my beer down on top of my iPhone, and the result was amazing. A beer lamp!
Looking straight down into the glass.
For the last picture, I agitated the beverage a bit to generate some foam.
If you think this is pretty when you're sober...try it with a few beers in your belly!
The author of this post is not responsible for any damage you cause to your iPhone.