Bayonetta 2. Cannot recommend it enough.
Donkey Kong Tropical Freeze: essentially like if Pixar made a Donkey Kong Country game
Mario Kart 8 is imo the best Mario Kart game ever made. Most polished with the most content.
Splatoon is a great new IP with innovative mechanics and is genuinly fun in groups. I still hate the art style though.
Smash is meh, but has tons of content and nostalgic crap. Pikmin 3 was meh. All those New Super Mario games I found endlessly dull. Kirby Cursed whatever The **** got old in about 30 minutes, never played it since. Mario Maker is fantastic but has a very limited shelf life and will become a beer coaster once N shuts down the servers. The Zelda HD remakes are great, but just recycled content so nothing new. In fact most of the other great games for the system I can think of are just remakes of older games, so I don't really count them.
My roommate really likes Xenogears, it looks ok. Kinda like an updated Phantasy Star in the few minutes I've watched him play.