If a specific ONE thread isn't a good idea, then how about a sticky or a section in the Q&A thread for both MOON
. Both had cameos according to the episode threads (where I got the MOON link thanks to MakubeX2). ONE is definitely relevant to Kanon2k6. MOON looks like something is relevant to Kanon2k6 also, but I can only get info via babelfish so it's sketchy. Both are historical links to Kanon.
Most of us know about Air, but loads of us know nothing about those 2 games.