For those of you completely new to both UDK and Blender, and want to use the same flow as I do, which is to create all the game’s meshes and stuff in Blender, and then send ’em over to the game engine – in this case, the Unreal Engine, here’s a beginner’s tutorial on how to get it done:
This video is now added in the UDK and Blender tutorials pages, in their Various sections.