An interesting article and discussion on game UI; including terminology breakdown of interface displays: meta, spatial, non-diegetic and diegetic.
http://www.gamasutra.com/view/feature/4286/game_ui_discoveries_what_players_.php
I only wish more genres were explored there have been some interesting uses of UI/HUD techniques being used in non-traditional ways (FPS techniques in Racing games, EA’s SHIFT, for example).
