did james arness play the alien creature in the movie it?
They eventually discover a spaceship buried in the ice; enter James Arness (who would become a TV superstar four years later on CBSâ long-running series âGunsmokeâ) as the memorable, hulking alien. âThe Beast from 20,000 Fathomsâ (1953) Thereâs nothing like a monster emerging from the sea to wreak havoc on land.