I just spotted this: http://forums.marvelheroes.com/
Congratulations Vanilla guys, that is the most stunning piece of forum artwork I've ever seen. Very intense look to it but it's clearly a perfect fit for a gaming forum.
It is a good compromise of dark theme with light comments.
I think dark theme works with a marvel/entertainment look , but light comment are an essential contrast for usability.
grep is your friend.
Lately I have been seeing few good forums on Vanilla platform.
Design wise, they were excellent. Kudos to the team.
Another forum is similar niche - http://forums.unknownworlds.com/
yes luckily they ceased using hot pink (or leg warmers) as part of their designs.