Grant Williams in The Incredible Shrinking Man (1957, dir. Jack Arnold), the story of a man who starts shrinking after he’s exposed to a radioactive cloud.
To film a scene in which Williams battles a tarantula, Arnold filmed a real Panamanian tarantula. He put the film of the tarantula in the ground glass of the camera, moved Williams into a matching position on oversize sets, and then had him count to the beat of a metronome to match his movements to those of the tarantula.
Frank Sinatra - Have Yourself A Merry Little Christmas