Hour Glass Application
Since there is a great Sand App here http://www.hackint0sh.org/forum/showthread.php?t=18075 I suggest developpers can know right a "Hour Glass" application. It should work exactly for 1 hour before sand finishes and when you turn over the phone should work another 1 hour. This one hour should be adjustable so that if one wants for 5 minutes for example then it will do the job for 5 minute. I think that would be great. Skin also could be changed and makes a great application.
i think this would make for an amusing timer. if it overrides the auto-lock/sleep timeout (ideally it would be used while in a dock or the like) that would be pretty cool. at the conclusion it could make an alert sound and if it's not at the forefront, gives an alert message like the apple alert.