I am an official Debian developer and maintain around 30 packages, (most of whose packaging can be found in my Git repositories. I am also responsible for the AVR32 debian port. My QA page can be found here.

uChoob is an extensible python IRC bot written around the twisted framework.

MultiSSH is a GTK+ based SSH client designed to connect to multiple servers and issue to same commands to each server, making administering multiple servers less of a chore. There is also functionality to only issue commands to individual servers, and to select a portion of the servers to send commands to.

Emul is a (unfinished) AVR32 emulator using an LLVM JIT.

GNU Robots is a game/diversion where you construct a program for a little robot, then watch him explore a world. The world is filled with baddies that can hurt you, objects that you can bump into, and food that you can eat. The goal of the game is to collect as many prizes as possible before you are killed by a baddie or you run out of energy. The programs for the robot are written in scheme.

This site is a django project quickly hacked up in a weekend. It uses dulwich to interface with GIT repositories, much like gitweb.