I actually saw some good orbital physics in a cartoon, the Real Ghostbusters; they were busting ghosts on a space station, and one took over the main computer to crash the station. One of the GBs (Winston) specifically mentioned that the station's rocket was being fired forward, so that they would slow down and drop out of orbit. Even as a kid, I was blown away that they included some real physics in a cartoon about ghosts! The episode's portrayal of zero-g movements and action-reaction when they fired their blasters was also handled in a (relatively) fairly realistic fashion. It wouldn't be until I saw Cowboy Bebop that I'd see it animated better.

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"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
"The Mayan symbol for "book" looks a lot like a triple hamburger, but I've never seen them claiming it as proof the Mayans had Big Macs." - KaiYeves
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort