The Fight
When learning a new language, it helps to have something concrete to do. The Fight is a simple little game I invented for that purpose. It features two characters who battle next to a flagpole, like the old days after school. This is an inside joke between my wife and I. I've created two versions of the game: one to learn AutoIt GUI controls and one to learn C#/WPF/XAML.
.NET
Install The Fight (2.0.0.0, Windows): setup-thefight.exe.
AutoIt
Install The Fight (1.0.2.2, Windows): setup-thefight.exe.
Installers built with the Nullsoft Install System. This is open source and freeware provided as is.