Leonard Maltin's Rating :
Should be :
IMDB Rating : 7.7
Rotten Tomatoes Rating : 88% (audience)
Rotten Tomatoes Synopsis : An energetic, sometimes noisy mix of Speilbergian sentiment and funhouse tricks that will appeal to kids and nostalgic adults alike.
In his review Leonard seems to like the movie, so I don't know why his rating is so mediocre.
I've seen The Goonies a bunch of times. Any times I pass by it on TV I'll stop and watch it for a while. Good, clean solid fun. A lot like the Little Rascals (as Leonard pointed out), with an excellent cast of young actors. I'll bet that there are a lot of people in their mid-thirties who would list this as their favorite movie from their youth.
Silly, goofy and fun (and I think adults will enjoy it too).