I both love and hate politics. It's humanity distilled right down to its core; power, tactics and feuds.
However, real-life politics can be a bit of a drag sometimes, and it has too many repercussions. Thus, me and Martin Smith (of maniacmartin.com) have teamed up to create Micronatia.
You can read more about it at the site, but it's essentially an online political simulation, with all the red tape removed, and an open-ended government simulation system, where you can form governments of pretty much every description (and more).
We're currently in private alpha, because the site is only seven days young; we have a user system and forums implemented, and are working on the government simulation (which is naturally the hardest part to implement, especially when my notes take up several hundred lines). The whole thing is implemented from scratch in Python (we're basing it on TurboGears), and is very well designed if I may say so myself. SQL injection is really hard, if not impossible, I've learnt far too much about bad BBCode already, clean URLs abound, and it's got really far along for seven days' work. All we need to do is add 'beta' under the logo to become fully Web 2.0...