I would say the original 1978 Superman as its a classic and one I grew up with but the latest man of steel is a close second.
Thank You for the giveaway.
Man of Steel. I guess I just connected to it really well. It seemed like the best telling of Superman's origin in film. And Zod was a good villain with sympathetic (yet evil) motivations.
My favorite Superman movie is SUPERMAN THE MOVIE with Christopher Reeve, because it made me believe that a man could fly. Completely blew me and my friends away when we saw it. Still the hallmark of all efforts IMO.
Favorite comic series has always been Superman vs The Flash. My favorite being the first I owned when I was 6. I thought it was most intense, and still get a thrill out of seeing this image of the comic.
My favorite Superman book has to be The Death and Life of Superman, because it's a great read!! I highly recommend it!
I know you were only asking for one of them, but your querry catipulted me to memory lane.