When Videogames Know They're Videogames

An anonymous reader writes "In 'I Never Metagame I Didn't Like', AllRPG.com goes into a discussion of metagaming - what it is and some games which feature it. The piece explains: 'Metagames show awareness of their nature as games. These games ignore all pretense of being a representation of a reality--rather, they know that they're polygons on a screen', and goes on to reference titles such as Earthbound and Metal Gear Solid as examples." Are there other examples of titles which address the player in this awfully postmodern way?