I need to know a children's movie from the 80s or 90s
I can vaguely remember watching a movie when I was younger. The problem is, I remember one of the previews that had a green monster or alien or something living with a family causing all sorts of problems and such. I remember the song for the preview was the happy days theme song. That's all I can remember. I am also pretty sure that the preview after it was for Harry and the Hendersons so I'm led to believe they came out about the same time... if anyone knows please let me know, it's killing me.
Thanks!
