i was looking for a way to tell the time when being asleep
and noticed some of the fellows on the form tried using the LED light to indicate it
but its highly not practical
what i was thinking is for a clock app to have an sleeping mode
which is :
the backlight is dimed to minimum and the phone locks itself every given time interval
and lets say after few secounds unlocks itself just for few seconds

im sure this would be easly implemented on your app

cheers