Download ConvertApple v1.1
ConvertApple has been updated to work with v3 of TheMovieDb API + numerous other tweaks and improvements over the last few months to make it more intelligent and even easier to use. With Encode & Tag both set to Auto it should be able to take care of the rest.
New = Rename & Rename Folder will sort and rename the files using the tag metadata; add to iTunes; drag & drop of multiple files and folders; imdb user-ratings; subtitles etc. Try it in a folder of 4gb mkv's, it can remux them into m4v in about 20 seconds each (bottleneck is disk speed!).
It was written specifically to put my entire video library consisting of different files, codecs into iTunes with full metadata so they appear the same as commercial downloads on my Apple TV. They also play fine on xbox MCE (with no transcoding) and windows MCE and iPhone, iPad etc. ConvertApple is freeware for windows = enjoy.