Before this gen I despised FPS, they gave me a headache but now FPS is one of my favorite genres. I also never ever played online before this gen, but now online multiplayer games are some of my most played games.
Also its weird but this gen also made me a fan of JRPGs even though I didn't even know they were a sub-genre of their own before. I guess a combination of JRPGs from my DS and 360 really changed my views on that.