Cool..but also oddly disturbing
I've been a lifelong fan of science-fiction and long term believer in alien life (though I doubt any has ever visited us). On the one hand that 20% figure is really exciting..but on the other hand somehow it's a little unsettling. Something along the lines of 'be careful what you wish for'?
Still it's a stunning achievement by the Kepler team. The next generation of equipment is going to make some awesome discoveries.