Marvel Two-in-One #18
At an art-show, the Thing and Alicia run into "The Scarecrow", a hold-over from the Marvel Monster craze of the early 70's. He's actually part of a painting, which is a doorway to another dimension. Scarecrow's the guardian of the portal and, of course, demons try to enter through it.
Similar to the The Golem issue, where they're simply trying to tie-up loose ends from an old title, and possibly snag some new reader interest for Scarecrow. When the conflict's over, they leave Scarecrow's story open, but I don't think it was ever picked up. Note that this is a different "Scarecrow", as Marvel also had a villain with the same name running around.
The Thing's also back to being an asshole, as he complains about the art exhibit and denies that the Scarecrow's real. In a dated line, he complains that he's missing an episode of "Space: 1999" for the crummy art show. Jeez, ya' think maybe Reed Richards coulda' hooked Ben up with one of them new-fangled fancy-dan "VCR" or "VTR" thingies? Or even DVR well before its time.