Here is another nice little app from xdpirate
Presenting, a countdown timer for Dingux!
Source code is included, though the source is a horrid mess. It kept hanging and stopping and I couldn't figure out why, so it looks like something a 10-year old wrote right now. But it works! If I ever decide to update this, I'll probably clean up the source :3 If you feel like cleaning it up for me, be my guest! xD
Extract to /local/apps/. It doesn't take any commandline parameters, everything is controlled within the application itself. Press A to switch between countdown mode and time set mode. You can use the font and alarm sound of your choice if you replace font.ttf and alarm.mp3!
Get it while it's hot, only at my Google Code page!
And cheers to Dingoonity for all the below!