the Blob

I was just thinking back to my days at Elementary School and I was reminded of a video we saw once. I recall that some students/faculty or somebody made a video about a 'blob' that was going through the school eating all of the students and teachers. I recall that this 'blob' was nothing more than somebody hiding underneath a blanket, but it was effective for the time. Being the video enthusiast that I am, I remember certain scenes and I believe I recall the name of the principle that was in the video.

I guess I'm asking . . . "Joel, do you remember this or was it just me?"