Should I use taxonomy or a node reference of some sort. Ideas Please

I have been putting together a site http://www.batman-trailer.com and I have run into some problems. I have several content types (not a problem)

ex: content types:
page - this is for adding basic batman content like movies and video games etc. Top level stuff on my left column.

rumors - rumors are rumors and when someone creates a rumor I want it displayed in the correct area (a rumor on batman begins would show in a block on the right while only viewing the batman begins page.

plot or storyline - this again is submitted and shown only on the correct page, batman begins plot on batman begins page.

reviews - same as the above.

Ok there is a few more but you get it. Right now it works, I have been using taxonomy, I create the batman-begins taxonomy and when I create the batman begins page I click that taxonomy for it. Now when a rumor or news or plot gets created they click the correct taxonomy and are shown in blocks while viewing the related pages.

Here is my problem

I want to add a content type called episodes and they should be shown on the correct pages. Ill make a listing block that when the original 60s show page is up there will be a block that shows all of the episodes. Each episode can have a review just like the others. I can do this the way I have been but I would have to create a taxonomy for each episode, so when the plot,rumors,review of each episode is shown the member adding it can click the correct taxonomy.

plus I might want to allow members to add episodes themselves or add comic books (later) Then they would also have to add the taxonomy term which (I really dont think i should allow)

Cant this be done easier with node relations or something

Maybe relations module. Please help before I get way involved.