Stopwatch still runs after quit!
Go to the new Stopwatch application and start the stopwatch. Quit out of the app, wait a few seconds, and start the application again. You'll find that the time continues to run in the background.
I don't think it's multitasking, instead the app would create a virtual timeline and mark the exact moment you started the timer (being the time is being tracked by the device) and when you open it again it just checks to see how much time passes and then keeps going.
Just a cool thing I wanted to point out.