texture unwrap?

i’m not sure if it’s the correct term, or if this is the correct thread, but i want to know how to UV a texture onto an object then unwrap it to make a different shape image like in this video:http://www.blender.org/features-gallery/feature-videos/?video=multi_uv

Unwrap by going into the objekts edit mode, selecting all (A), and pressing (U), then open your ímage editor