Chroma - Made an 8 player multiplayer game in UDK, also made a server browser using the scalable google app engine
Cell - Made a system for emailing game crashes to the people that need to see it
Galactic Arms Race - Programmed an online 32 person multiplayer game using the Lidgren networking API
Steamworks - Set up the online achievements using the steamworks web API, and made an interface in c# to load and use the c++ steamworks.dll to get the achievements and use the steam cloud to load/save player data