I think I know the Knight Rider site that you mean, Roth. I worked my way through it while I was watching my box set.
The filming locations have been fairly well covered by myself and others. There are episode guides to the first two seasons on the home page - I updated the first season and drafted the second, although that was a couple of years ago now. I even did the screengrabs for most of season 3, but haven't written much text to go with them yet. Maybe that's a project for the new year! These already include summaries and trivia, but I see no reason why they couldn't be expanded to include mistakes (we've already got seven pages of them here) and quotes (already scattered through the cast/characters section of the forum). They could also list the cast and crew. An alternative would be to start a new forum thread for episodes guides split into sub-threads for each season.
Another way to go would be a Wiki-style extension to HNet. There's one for "CHiPs" (chips-tv.com/wiki), to which I've added many pages, summaries, cast/crew lists, quotes, trivia, screengrabs and locations. The advantage to this is that each episode can have a page with all the information you wanted, and each page can be edited and added to by anyone with a basic knowledge of the Wiki mark-up language. You can also add linked pages for characters, actors, places (e.g. the Duke Farm, the Boar's Nest etc.) and so on. It would almost certainly be to most work for Meadowmufn to set up, but ultimately give the best end result when we've all contributed (IMHO).