There are a lot of interesting and some very well done demos among the entries, however the winner for me is Typing Tiles. Typing Tiles is a simple but entertaining concept. It is exclusively made with panels (except the music :P ) and it is a complete game with menu, difficulty, loosing or winning screens, replay options etc.
I have started a lot of projects in my "3dgs career" but I have never finished a game to where it could be published. Respect for accomplishing more in your first project than I have in countless tries.
PS: I suck at typing so maybe this will hep me get better.