Looping Epic Citadel would be perfect for that.Find a graphic intense game with a continuously playing intro screen?
So, no app?
MotionMan
Turn off autolock and autodim and let it sit around with the screen on?
I'm not sure if you're serious. Search the market for "battery drain" and there are apps.
Are any of them any good?
MotionMan
It might help us if you provide a little more detail as to what exactly you are trying to accomplish? There is a difference in running down the battery with just a screen on, or using a game or such to run it down as fast as possible, etc.
On occasion, I want to drain the battery as quickly as possible and on command.
MotionMan