It might be a stretch to call “The Poseidon Adventure” science fiction. It was part of the all-star disaster genre, thus giving Nielsen impeccable credentials when it came to his most famous movie roles, in the Airplane! series. I actually prefer his role in Forbidden Planet, but that’s just me.
Nielsen along with co-star Anne Francis in his second film, Forbidden Planet (1956). Nielsen: “Supposedly a science fiction version of Shakespeare’s The Tempest, it was all about the id, or something like that. Who knows? The Trekkies today regard it as the forerunner of Star Trek. I just had to wear a tight uniform and make eyes at Anne Francis. I was pretty thin back then.”