Would it be an easy task to implement
http://www.gaz1.com/movdb/ site for movie scraping?
Although the main interfaces are returning XML results, and it would be much better to parse XML, scraping them would also work.
At least here we would be able easily obtain hi-res covers.
I am not sure if you used the MP TV Series plugin, it uses thetvdb.com for it's database source.
The database I mentioned at the beginning of this post, is basically adapted copy of the TV series version of the database.
Having this as a proper video data source would be a blast.