It's 25 minutes long and in 3 parts, and is well worth watching in full.
If you only watch one part, go for part 2.
Part 1 http://www.youtube.com/watch?v=5PNt9vXSv-Y
Part 2 http://www.youtube.com/watch?v=Vm7rUbx9l-o
Part 3 http://www.youtube.com/watch?v=arvqGnDuHIc

