[Goronmon]

I'm a big gamer so most other sites I peruse are usually specific to that topic.

http://www.evilavatar.com (vBulletin)

- Sure, it's a news site, but the best part is the forums behind the scenes.

http://vnboards.ign.com (custom ASP)

- The first board system I stuck with. Been around for a while. I've actually been moderating there for over 4 years.