a list of all rooms, recently active rooms first
General discussion about Code Review -> http://codereview.stackexchange.com/
Chat room for Travel.SE http://travel.stackexchange.com
Associated with Math.SE; for both general discussion & math questions alike. Just ask; don't ask to ask. Rarely if ever expressible as a ratio of integers. See below for guidelines.
The first breach costs you an arm....
Game development and other polite discussion. Please don't star trivial messages.
Welcome back, my Master! お帰りなさいませ、ご主人様! Sit back and relax with general chat for http://anime.stackexchange.com/. We're now serving anime & manga with a side of Moé. Smiles are free and lolis are plentiful. Ask about our new maid service.
Main chat room for http://worldbuilding.stackexchange.com
General discussion around Ask Ubuntu, Ubuntu & official Ubuntu derivatives. For other Linux distros please see: http://chat.stackexchange.com/rooms/26/unix-and-linux
General discussion for http://german.stackexchange.com. You may speak both German and English here.
General chat for Physics Stack Exchange (http://physics.stackexchange.com/). For MathJax use http://meta.math.stackexchange.com/a/3297#3297