Games played on computers, consoles, or brain implants.
Actual political discussion and discourse. If you want to argue in bad faith or be a devil's advocate, go over to Flamewars instead.
The catchall category for everything. If you're not sure where it goes, it probably goes here. Literally anything not covered by a real topic.
Animation from or generally associated with Japan. No one is interested in arguing with you about what "counts" as anime or not. If you feel like it's anime, talk about it here.
Tabletop orthogames, german board games, card games, etc...
Travel to hotels or convention centers where like-minded individuals enjoy a shared experience related to their hobbies or work.
Music of all kinds, all genres. Death Metal and Bebop next to Filk and Rachmaninoff.
Phones, PCs, arduinos and ham radios: all the practical or real-world applications of the fruits of science.
Yo dawg. If you want to talk about the forum itself. Suggestions, complaints, or just ridiculous pedantry.
Official forum threads for episodes of GeekNights and show-related discussion.
Comics, graphic novels, manga: anything that involves sequential illustrated storytelling.
Sportsball! Athletic orthogames like football, hockey, baseball, basketball, F1, etc...
Movies of all kinds that aren't best categorized as "anime". Classic cinema, garbage B movies, etc...
Art you have created wish to discuss from an artistic perspective. Illustrations, crafts, models: whatever!
Wanna start a fight? Argue in bad faith? Be an insufferable pedant? Let's roll.
Actual science discussions, like astronomy, biology, physics, and space travel. If you don't think it goes here, it probably goes in Technology instead.
Role playing games like Burning Wheel or Dungeons & Dragons.