Second Skin, Pure West Films' documentary about the lives of the people behind the players of massively-multiplayer online games, hits select theatres today, but if you can't make it there's always Hulu.
Second Skin provides a rather balanced look at the relationships formed via online games, from friendships to romances to relationships that go even deeper still. It's funny, disturbing, and disturbingly funny at the same time. I particularly enjoyed the slice-of-life moments they included, such as when the World of Warcraft players ran out of toilet paper. Don't laugh. It happens.
I'd highly recommend catching it in the theatre if you can, but if you can't, ad-supported free video site Hulu has you covered.
Kotaku AU Note: Hulu? Bah!