UV mapping can at the best of times be a daunting experience, and as such is one of the areas in Blender that is being developed as part of the GSoC. Some very handy and convenient improvements are being made to the current UV tool-set and there are many more to come. Here are two preview videos from separate blender branches on the UV tool-set and its development.
Shuvro Sarker from the avocado branch - Automatic UV Seams
Riakiotakis Antonis from the onion branch - UV Editing Tools