Here's How to Use Your iPhone to Get Up-Close Video of Monkeys

If you want to get some good footage next time you go to the zoo, here's how to do it:  Some guy used the front-facing camera on his iPhone to film monkeys up close, because they were using it like a mirror.  Then he went a step further.
He drilled a hole in the middle of an ACTUAL mirror, just big enough for his iPhone camera to film through.  Then he put it up against the glass at the orangutan enclosure, and they loved it.