For starters I have never ever attended a scoring session yet so I would be satisfied to attend just about anyone and I do not care if it is to an unknown movie or to a session with some unknown composer.
Anything by Horner...well anything by Goldsmith... okay I would have liked to gone to any of them. That is my dream to be able to sit in the back for a scoring session. I hope to sit in on at least 1 before I pass away.
Alien. In the booth to watch Jerry work that echoplex! Psycho. on the stage to hear the original in stereo Night of the Hunter to figure out how Schumann got that Preacher scream moment.