Metroid Prime looked amazing and well ahead of it's time. I'd also like to say Super Mario Sunshine was a beautiful game that looked way ahead of it's time, its textures, bright colors, and some of the water effects in Mario Sunshine looked graphically beautiful.
I also agree that naughty dog games on the PS3 such as Last of Us and Uncharted looked like PS4 games.
Donkey Kong Country on the SNES is an obvious inclusion, the 3D sprites made it look like a 5th Gen game that's comparable to PS1,N64,Saturn games, and looked better than MOST 32X games, which was a huge slap in the face to Sega at the time.
I also like to include Sonic Adventure as well, while yes it was technically on a 6th gen system, the game looks amazing for releasing in 1998 and blew away pretty much every game in terms of graphics that year, the high polygon count, textures, and more.
IMO as well, Red Dead redemption 2, that game just looks leaps ahead of most AAA games this gen imo, its graphical fidelity is amazing.