If you want to get your gp2x to sleep press L+R+middle volume. CPU will go down to 30Mhz, backlight will be disabled and the lcd chip will be turned off. Battery led will blink every second. To go back to normal mode, use the same combination again. The program stays active while the gp2x is running. Read more about GP2x Sleep (GP2x Script)
The clock from the TV show 24, now on your DS! With realistic font and sound! It's open source (GNU GPL v2), so modify as you wish. Read more about 24ClockDS (NDS Application)
Gedeon34 has graphically improved River Crossing for Nintendo DS. It's a puzzle game where you have to cross a river full of danger. There are three different types of puzzles available. Read more about River Crossing v1 (NDS Game)