live at pompeii is really good. the way it's filmed and edited, and the atmosphere of it is perfect.
Oh god, my favorite song? I can't decide. I really love their big songs though. Echoes. Dogs. Shine on You Crazy Diamond. Atom Heart Mother. Those...
Ram is amazing. If it was up there I would pick that one instead of Plastic Ono Band. That one is great too, though.
Separate names with a comma.