"The Superman films were just a lot of fun. One didn't take them very seriously. The draw as far as I was concerned was Marlon Brando, and the people were all very enjoyable to work with. There's not a lot I can say about what went into the performance. I suppose it's good to be seen in a film that is going to be very popular and it's quite flattering to be chosen to play the mother of Superman! The special effects were fabulous and you were very aware of all that going on - tramping over polystyrene and so on".