Mac and Me (August 12th, 1988). . . or E.T. on Coke and McDonald's.
I'm embarrassed to say that I liked this movie when I saw it. I suppose I'm a sucker for terrible movie ripoff's. Then again, I was only 8 years old.
This movie was a marketing nightmare. I highly recommend watching it if you want to learn how not to market a movie.
"Mac" actually stood for "Mysterious Alien Creature". Apparently they were intending to make a sequel, because there's a title card at the end of the movie that said "We'll Be Back!" I wonder why they never did. I've waited 20 years and have yet to be revisited by another Mysterious Alien Creature.
Oh well, I suppose it's for the best.
(Image from impawards.com)