Trailer for the campy, sci-fi cult classic, ATTACK OF THE 50 FOOT WOMAN, starring Allison Hayes, William Hudson and Yvette Vickers.
Despite unconvincing special effects, ATTACK OF THE 50 FOOT WOMAN was a box-office hit grossing nearly six times its negative cost of $88,000. According to Wilipedia, the film "...made enough money to prompt discussion of a sequel. According to producer Jacques Marquette, the sequel was to be produced at a higher budget, and in color. A script was also written, though the project never advanced beyond the discussion phase."
It was remade in 1993 as an HBO movie starring Darryl Hannah and has ben parodied countless times.