The original story for this episode was written by Teri Hatcher.
After being shrunk, Superman says, "Look at me! I look like Mighty Mouse!" Mighty Mouse, who was named Super Mouse when he first appeared in The Mouse of Tomorrow (1942), was created as a parody of Superman.
When Joe goes nuts on the vending machine in the Daily Planet and Clark helps, the viewer can see that the offending candy bar Joe wanted is a "Clark" bar. The writing on the wrapper is clearly visible just before the bar falls out of the machine.