My favorites are:
Chat: I like chat because it is nice just to relax and talk about whatever you want, or to do things like the make a story threads.
Reviews: I like to write and read game reviews, and it is always nice to see how people view games, with their reasons why they think the way they do. Though this should case a great discussion about the game though, there are rarely any comments anymore, leaving any chance for a good discussion dead.
RPG: Role playing is just very fun to do, and I'm thinking of making a new character possably too...and I made a new RPG that is just getting started.
General Discussion/Nintendo: Zelda and other Nintendo things interest me, and I like discussions about these, and learning new things from other members, such as the release date for Phantom Hourglass from Dakare, or daily Brawl updates from Sly.
The other two that I like the most are the Administrative announcements, because I like reading all of the news that Bob and others come out with; and PC, because I am interested in computers, and I like shecking in it for different things.