Organizing Apple TV?

I've not had much time to mess around with it, being its been syncing my content for 9 hours now.

However, when adding my own videos how do you keep them all in a series like Apple does with there tv shows?

I'm wanting to have a section in the TV Shows just for my UFC fights. Then under that section show Fighter vs Fighter - on this PPV.

Next question, can you add links to iTunes where files are at, instead of the whole file? Because if I add all of my stuff to iTunes my folder is going to be well over 150gigs. That's ridiculous and really hard to keep backed up.

Right now when ever I add something to iTunes I go to File - Add to Library. And now with all my UFC fights my library is getting way over 150GB which is just to big.

Is there a way to reference a files location - without adding the whole thing to the iTunes library?

for example I want to watch my UFC fights - via the stream. Not add them to the Apple TV. But I don't want to add them to my iTunes library, because they take up to much space.

So is there an option for iTunes to just add where they are on the hard-drive and not actually add them to my library?