Recently I came across this article ---> http://www.popsci.com/article/technology/rise-insect-drones <---, detailing the success of engineers/researchers to mimic insect flight, for potential application in insect drones. In short, the article details how the flight of insects was previously misunderstood - based on our conventional notions of flight they were unable to generate the lift to stay aloft - and now, with better study into concepts into "wake absorption" and other fancy flying terms, we're able to mimic an insect's flight to produce the highly efficient lift that they create. I would recommend reading it.
The topic on it's own is fascinating. Personally I think robotic bugs are cool. But I also think that the potentials for the new forms of flight they're able to reproduce are also quite interesting. Who knows: modifications on stuff like this could be used in larger scales drones, or maybe even better human powered flight. This all may be unfeasible - I'm no aeronautic engineer - but it's cool to think about nonetheless.