Timer
Timer is a simple, open-source android app I wrote to fill in a basic missing feature in vanilla android: stopwatch and countdown timing capability. Get it here: http://play.google.com/store/apps/details?id=org.dpadgett.timer
The source code repository is hosted on github: https://github.com/dpadgett/Timer
If you find any issues, please file a bug against the project on github: https://github.com/dpadgett/Timer/issues
If you make improvements, feel free to send me a pull request on github.
Screenshots: