20 Things You Didn't Know About The Thing
9. Stop-Motion Monster Scenes Were Filmed But Rejected
Though the bulk of the film's Thing effects are ingenious works of vile puppetry, there was an original plan to use stop-motion animation for MacReady's final confrontation with the Blair-Thing monster.
Stop-motion legend Randall William Cook, who later won three Oscars for his visual effects work on The Lord of the Rings trilogy, created a miniature model of the film's set and created wide shots of the Blair-Thing flailing around.
However Carpenter was unhappy with the end result, and so only ended up using a few seconds of Cook's work in the final film. Thankfully, though, a more extensive glimpse of the raw animation was made available on The Thing's home video release: