I mentioned it when it aired (nine years ago), but I finally have a clip of the Space Camp reference from The Simpsons.

The reference occurs near the beginning if the episode, “I’m Spelling as Fast as I Can.”  This was the twelfth episode of the fourteenth season of The Simpsons.

Update: 20th Century Fox seems to have decided that 21 seconds from the Simpsons is too much for YouTube.  So much for fair use.  Check out the episode though if you want to see it for yourself.