Just slick and elegant looking UI you've seen in games, even if they're from shit games. Case in point:
ITT: Slickest User Interfaces
Kayden Johnson
Benjamin Cook
Ridge Racer 4
Robert Howard
One of the Ridge Racer 4 one's didnt upload, but i might as well show the 5th game's UI too.
Jose Russell
P4
Aaron Johnson
For stylish UI, I can only think the Wipeout.
Now, for useful interface that doesn't get (too much) in the way of the gameplay is the 3DS Zeldas, Monster Hunter, Dark Souls, Nethack (using hotkeys avoid many troubles, but requires memorization). Those are from the top of my head, there are many others.
Ayden Rivera
Doesn't P5's UI go for even more style?
Jose Taylor
Better believe it.
Seems to go a little too far for my liking in places, but in motion I can imagine its really pleasing to watch.
Matthew Williams
How the mighty have fallen
Aaron Reed
Persona 5 just oozes style and I love it.
It's one of those things where, even if what you're doing isn't all that cool, it feels cool as heck.
Easton King
gozya 3 and 6 have a way better looking UI