You’d better hurry if you’re aiming to take some sort of geeky-proposal prize; the stakes get higher every week. A companion cube ringbox is so two months ago, and even Sir. Mr. Capt. Picard himself might have a bit of run going for his money in this arena–Gary Hudston is the standing Grand Wizard of all Geek Betrothal Levels:
Hudston hired a skilled developer to create series of custom levels for Portal 2 that his potential betrothed would have to play through. When it heard about his apparently not so secret project, Valve even helped him secure Ellen McLain, the voice of GLaDOS, to record original audio.
If that’s not awesome enough to win a geek over, nothing is. You can enjoy the custom engagement levels yourself, too; check out the video play-through or download the levels at the Gary Hudston Project.