My brother and I LOVED Flight of the Navigator! The Peanut Butter Solution? Totally forgot about that one! There are a couple here I didn't see, but I vote to add Labyrinth!
How did any of us end up remotely normal?!
http://blogs.babble.com/babble-voices/thats-what-she-said-brittany-gibbons-shauna-glenn/2012/10/29/the-unintentionally-creepy-movies-from-our-youth/#flight-of-the-navigator