Juan Carlos Pineiro Escoriaza's 2008 documentary is a somewhat more light-hearted look at virtual worlds, with more concentration on how online connections can lead to real-world relationships.
This is the most traditionally constructed documentary of the three. Though there is a great mix of in-game footage and live action stuff, the documentary ends up getting narrated more or less by the many players who are interviewed (as well as a few talking heads), Pineiro Escoriaza shows us a whole range of types of people who spend most of their free time gaming, and a gamut of ways in which they can be affected, in both socially positive and negative ways, by their lifestyles.
Enjoy!
How does the time spent in World of Warcraft affect interpersonal relations in the world of non-Warcraft? You might focus on the impact on romantic life or addiction, or look at the unexpected ramifications for workers in the developing world.