Guys - posting how we hooked up our foosball table to the web in case it gives anyone ideas on extensions, follow-ons, etc...
We used the idea of Avatars to track who was playing the game. It is pretty cool - the peeps at the office love playing it since the use of Avatars made the workflow of a normal game actually better instead of more awkward.
Arduino code
Foosball Web Leaderboard
Blog post (a bit more color)
Video about how we hooked it up
If you have a foosball table with goal sensors, it is pretty easy to make one of your own. Also, instead of using emails to send score updates, you could post to Twitter instead... All the dashboards, scripting, data, etc... is free for community accounts.
Enjoy...