Mathnet had about the best production values I have ever seen on a kids' show. Nearly everything was shot on location rather than on cheap-looking sets, and they used as much natural light as possible. (It made the rest of Square One TV, the kids' math show where Mathnet first appeared, look really, really cheesy in comparison.) Also, and I'm not 100% sure on this, but it looked like they shot it on film stock, rather than videotape. And, of course, unlike a lot of kids' shows that do location shoots, this was actually filmed in Los Angeles and, later, New York (rather than Toronto or Vancouver) and they show a lot of the famous landmarks, like the Hollywood sign.
Simpsons fans will also recognize Yeardley Smith, the voice of Lisa Simpson (who really does speak like Lisa in real life), in one of the earliest Mathnet stories.
