I've recently rigged a simple yet sort-of complex gameshow setup to be used however you want. We tried it out earlier in Sumz's server and had some fun, but a little trouble thinking of questions. This may also help you figure out how to use events.
When a player buzzes in, the rest of the buzzers are disabled until the Host decides if the answer is correct or not. There's a 10 second time limit from when a player buzzes in from when they get the question automatically incorrect (if they don't answer). The timer turns black and makes an alarm sound when it hits 0 to notify the host.

When you buzz in your buzzer makes a buzzing noise and lights up along with your scores.

On the left, the + adds 5 points and the - subtracts 5 points. The red cylinder on the right is used when the timer hits 0 or when a player answers incorrectly. It makes a buzz-type sound. The green cylinder is used when the player answers a question correctly, and it plays a nice tune.

DOWNLOAD:Â http://www.megaupload.com/?d=5XZQWGDZ (.rar, extract to your Blockland folder)
Feedback appreciated. Also, let me know if the DL works, or if there's any bugs with the build. Thanks.