Cuphead is looking absolutely phenomenal. I'm in love with it's style and I find it utterly amazing that you can't even tell that it is a video game and not a cartoon.
Also, if it counts since it's just a fangame, Mother 4 looks like it'll be an amazing fan followup to my favorite game of all time. Everything they've shown so far screams of the same spirit the original games have.
Yeah ! Cuphead does look amazing ! I had the chance to speak with the lead programmer, very kind person !