I always get excited when I learn about a new Generation being announced, especially when I see the starter choices. When VI was revealed I took to Chespin, the Grass type starter, almost instantly. The other two were kind of an afterthought. When I started X, however, I ended choosing Froakie for whatever reason. Best decision I could've made.
I typically run Surf, Ice Beam, Dark Pulse and Extrasensory on this guy, and build him in such a way that he can sweep teams on his own. I even like using him in Smash Bros. Wii U, and I'm half decent with him too.
Gen VI introduced us to a lot of awesome new Pokemon, chief among which is Greninja.