I get quite obsessive-compuslive about my tagging as well. But it can be a pain when doing it by hand, and I hate windows media. The program i use to sort out my tags is Mp3tag (Google for it) - it's german and can do loads of useful things like renaming files consistently, tagging files from the filename if they're untagged, removing underscores, getting info from freedb automatically - it's a dream. Oh, and it's free.
