your movies within the Movies folder, there is a nice workaround that could work for you.

Create a new Playlist and name it. Dragnet for example.
Drag all the Dragnet movies into that Playlist.
When you sync the iPod/iPad, do not allow it to do a shotgun sync, tailor it to only sync those playlist that you want.
Then you can include, in the one playlist, all the Dragnet episodes.

Would that work for you?

P