I really wish Netflix had the YouTube-esque ability for users to make and share playlists.

All the Star Trek series and films are on Netflix. Wouldn't it be great to have a playlist of every episode by original air date? (So you don't get confused when Deep Space 9 refers to an event in First Contact?) Wouldn't it be awesome to have a playlist of only the top 20 Voyager episodes, so you don't have to suffer through the awful ones?

It surprises me they haven't implemented this. If they did, any user could solve your problem of putting a movie series in order.

Of course I also wish they had a "back 30 seconds" button for when you miss a line of dialog, and that's never been done either. Sigh. It seems like all their revenue is going into making Marvel shows and zero into software development.