Here's another game that's been floating around the Web for quite some time. Reflections, created by Input Entertainment of Germany, is a very challenging puzzle game. The objective of the game is to position the mirrors and lenses provided such that the laser passes through and illuminates each of the light bulbs. An easy game to pick and get started with, but later levels present increased difficulty and more complex lens types.
The only complaint I have with this game is that when you finally position the last lens correctly, the fruits of your labor are immediately covered up with a SUCCESS! screen, thereby robbing you of the delight of seeing the correct solution displayed in all its glory. Still, it's a fun game that should provide a couple of hours of mind-bending, puzzle-solving, skill-honing fun.