The powered paper aeroplane now has a remote controlled version!

http://www.poweruptoys.com/pages/app-toys

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This US vendor sells a $15 kit of parts to add an electric propulsion system to a paper plane.
http://www.poweruptoys.com/pages/about-us

A video of a very slow indoor RC ornithopter from Japan.
http://www.wimp.com/slowornithopter/