Wondering how to create an app bundle in Mac OS X? In this two-part video tutorial series, you'll learn how to create an application that is completely self-contained and is drag-and-droppable/relocatable. Frameworks, PlugIns, and Resources are embedded in the .app bundle, thus avoiding the need for installers and avoiding issues like dll-hell. There is also a quick demonstration on how to enable Universal Binary building at 15:46. Take a look!