In the RC world we might call them "unusual" flying objects -- or alien helicopters. I've had a couple of new UFO sightings this week and I've added them to my list of Radio Controlled Flying Saucers and UFOs.
There's the little dual rotor one from RaidenTech that flashes in blue, red, and green. Then there's a nifty 4-channel saucer (pictured) from over at Think Geek that lets you fly it in all directions.
Yes, the aliens are among us and we are them.