In the first "street dancing" scene (the one in which Kelly accompanies Ozone and Turbo to the beach), the audience watching the dancing is comprised of surfers and beach bums. In said audience, we see a man in a black singlet clapping with the music. This man is Jean-Claude Van Damme in his first on-screen appearance. According to Van Damme, he tried hard to draw attention to himself by jumping in the air and doing flips but they were not included in the film.
First feature film of rapper Ice-T - two of his early instrumental rap songs were used (Tibetan Jam and Reckless); the producers later used Tibetan Jam in the film Missing in Action (1984) where it was used as background music.