TSCP's comments are interesting, but most products come with fairly clear information about what use is covered in the product and what is not. Generally purchased products come with a license to use the product but not to distribute the mesh. Unless specifically listed in that document, use in a movie wouldn't be prohibited. Unless you're talking about a huge budget project with the potential to make much money, I'd simply read the use / copyright documents that came with the products, and stick to my understanding of them. I agree about the cool coils!