The Simpsons Movie Easter Egg - Thx Advert and Designs for Characters.

Go onto any of the sub menus in special features (deleted scenes, special stuff, a lot of trailers) and press up on your remote. The title(deleted scenes, special stuff or a lot of trailers) and select it. these are character plans for lisas boyfriend, the meny eyed monster and Russ Cargal. Also if you do the same thing on the subtitles menu. It is the one on the left (Y axis) This is a THX advert.