This old cartoon commercial popped up in my head lately. I was a kid when I saw it sometime in the 90's on cartoon network and I remember the commercial being black and white. It looked like everything was peaceful but then a nightmare started to spread and as it did I could see something like black clouds/smudge start to cover the buildings, stairs and the land. I think I remember hearing something along the lines of, "Stop the nightmare in time" or "...darkness covers the land". I saw this commercial maybe twice and remember thinking to myself that the film's cartoon characters had stiff movements were as the "darkness" had more of a quick and fluid-like movement.