Yeah, I use custom fields for audio, which I'm much more anal about and have multiple view schemes for.
For Video, I want it real simple, so I use all default fields; it's not real organized this way as one view scheme and the default fields apply across many genres like Film, TV, Science, Politics, etc. So for Film, often the artist and album field (title of movie) are the same because I'm too lazy to put in the Director/Writer in Artist.
The thing to do is to have different view schemes so that many custom fields unique to TV, Film, Documentary, etc. can be used for one specific genre. I could see a videophile wanting to use Director, Producer, Screenplay, FX tags for Film but maybe not their collection of TV shows. Like I said, I want it simple for the family so Genre, Artist, Album reflect: Genre, TV show or film name (or sometimes director), and album is Series or film name.
PS - Sunday for next DRWho (maybe even Sat. night)!
DC