I notice in the WMC Movie Guide it shows me all kinds of movies...some of which I've seen outside of WMC, and some of which I have previously recorded, and some I don't care anything about.  I would like to do two things, and I'm looking for a plugin that would help.  First, I'd like to be able to tell WMC that I'm not interested in watching a movie, and don't show it to me in the list anymore.  Second, I'd like WMC to remember what I've already seen and don't show me that either.  Is there such a plugin available?

Not that I've ever seen, but I agree that would be a really cool plug-in.

All I can think of that would be easy to implement is a plug-in that put an overlay on the coverart to signify watched.

If I'm not mistaken, WMC can remember what episodes of a specific series I have previously recorded/watched, so it knows not to record that episode again, but if I miss that episode and it gets rebroadcast, it records it the second time.  I don't know the specifics of how that works, but if the same function was available for movies that would be great.  Of course, it would be better if it just didn't show me the movie in the list to begin with.