Wormser from 'Revenge of the Nerds' now pitching toilet paper
Andrew Cassese played the pre-teen genius in both 1984's Revenge of the Nerds and the 1987 sequel. Heck, he even has his own official website. In the '80s, he also appeared on The Facts of Life and TV 101. These days though, you're more likely to hear Cassese than see him: He's better know for his voice-over work on commercials and TV shows.
Special thanks to Heeb for the discovery.