Sleep Cycle Alarm Clock

Here is a pretty sweet alarm app for the iPhone.  You place the phone in your bed and set a time range in which you would like to be woken up.  Once you've done that you place the phone in your bed.

Now here is the cool part.  When you sleep, your body passes through various stages or cycles.  When you wake up durring a cycle of deep sleep, you will feel less rested. The phone measures your movements in bed and from there determines which sleep cycle you are experiencing.  It then will wake you up during the preset window but will do it at the time you are likely to feel most rested.  While measuring sleep cycles with precision is much more complicated, this is the first time people have been able to purchase such technology for 99 cents.