I treat spoilers for LOTR much differently than I do for say...Star Wars movies (i.e. EP 2). I don't know much of the plot of Ep 2 and I'd like to keep it that way and basically be surprised the first time I see it. As far as LOTR, I know the entirety of the story already and the idea of going in fresh from plot spoilers seems a little ridiculous. I want to know beforehand where the big changes take place so I can be prepared for them rather than having them ruin the experience when I finally see it.
This can go a little far if I'm fully aware of how every scene plays out. Seeing for instance, the intrepretation of the Dead Marshes on screen for the first time will be exhilirating - I know it'll be there but not exactly how it'll look and feel. On the other hand, if Gandalf's confrontation with Saruman takes a crazy twist with Saruman ending up dead at Orthanc (as seems will be the case) I want to know about it beforehand, lest I be totally aghast.
This can go a little far if I'm fully aware of how every scene plays out. Seeing for instance, the intrepretation of the Dead Marshes on screen for the first time will be exhilirating - I know it'll be there but not exactly how it'll look and feel. On the other hand, if Gandalf's confrontation with Saruman takes a crazy twist with Saruman ending up dead at Orthanc (as seems will be the case) I want to know about it beforehand, lest I be totally aghast.

