The Harvard Network Accessible Dartboard
These guys hacked a dartboard to serve scores over a wireless network. There is an OpenGL client that grabs the scores, runs the games, stores the results in a database, and suggests moves based on player's past performance. On top of all this, the client looks exactly like the dartboard, so it can be projected over the real thing.
Wouldn't just been easier to hack a digital dartboard? You know, the one in pubs? Of course that wouldn't give the feel of a classic metal dart/wool dartboard.
J.
...but obvisously before getting my morning caffine fix...