Use a .NET reactive observable to create a simple stopwatch because I needed one:)
C:>stopwatch
Press [Enter] to start [L] to lap and [Esc] to stop the stopwatch... elapsed time: 00:00:04, current local time: 1/31/2014 10:26:37 AM -06:00 lap 1, 00:00:02 lap 2, 00:00:01
C:>