Here’s a quick and dirty Unity demo showing how you can use the Leap Motion Controller as a mouse replacement for looking around in a traditional first-person control scheme.
There is a jumping puzzle that’s there as a skill test to compare the difference between using a mouse and using the Leap Motion Controller. Mouse input also works, so you can try both for a comparison.
You can also pull cubes towards the camera by closing your fist. This is to demonstrate that the same hand used for camera look can perform other gestures as well.
Here’s the link to the project source + binaries.