I start a little championship here to see what combination of applications (can be anything, ie. your own python scripts) need to be run in order to deplete the battery fastest.

Rule 1. Fully charge the battery
Rule 2. Start programs
Rule 3. Go until you get the low battery warning
Rule 4. Report your results

This is the first contestant, which I believe will be very easy to beat:

I've been watching 6x45 minute 1024 bit divx/128 bit mp3 640x480 films with BT off, wifi scanning at 10 minutes. Total time to deplete battery: 270 minutes.