Link has the ability to flatten himself and slide along walls in the upcoming 3DS sequel to the cherished SNES adventure, The Legend of Zelda: A Link to the Past. Think of it as wallpaper in honor of the protagonist, or as living graffiti defacing the dungeon's interior.
It's a new mechanic (likely one of several) that never felt forced in my ascent up a seven-story tower, and pushed me to think differently about the rigid environment.