This hint helped me fix an issue I had with Remote on an iPad, Apple TV 3G, iTunes 10.6.
I've got the show name in the fields Show, Artist, Sort Show; the season number in Season; the episode numbers in Episode, Track #; a manual autosequence number in Episode ID, the show title in Name; These fields I left blank: Sort Album, Sort Artist, Sort Album Artist, Sort Composer, Release Date. In the Option Tab/Media Kind select TV Show.
Before this hint the episodes would display in the correct order in Remote on iPad, but when tapping on an episode Apple TV would play a *different* show from the same season eg tap on episode 1, plays episode 12, tap on 2 plays 5. There was a 1 to 1 relation ship, but just not as expected - quite a game to make it play the episode I wanted to.
Anyways selecting Sort Show for all episodes at once seems to have forced an update and fixed my last issue with sorting tv shows.