(http://www.2flashgames.com/images_/f-The-Envelopes-Please-1923-th.jpg)
(http://img187.imageshack.us/img187/7574/cnud5.jpg)
Although it's just a short flash game, I think you should check it out (http://www.cartoonnetwork.com/games/cc/envelopes). It reminded me of oldschool adventures, and it has Cartoon Network characters ;) Perhaps it will be inspiring for someone's AGS project.
Nice easy but enjoyable distraction, thanks :D