As far as 80s movies go, 'Johnny Be Good' should be good, but it's not. It stars some of the hottest 80s stars, including the star Anthony Michael Hall, the Iron Man himself Robert Downey Jr, and Uma Thurman. If you want to see all of those actors as baby versions of themselves (ok, TEEN version) then this movie will do that for you. You just won't enjoy yourself at all.
The movie fails from being a comedy with an unfunny premise. It's about a highschool football player who has to choose between going to a university or hanging around with his girlfriend. That might make for an interesting drama, but as for a comedy, there isn't much there to work with. Johnny be bad, people. Johnny be very bad. I can't resist doing that when I talk about this movie.