Eddie and Lou are minor characters at best on The Simpsons, usually good for a laugh here and there but otherwise not an big part of the main cast of characters. With that said, although I do consider myself a pretty big fan of the Simpsons (well at least the first 15 seasons), I for one completely missed this easter egg by the animators even after seeing this episode dozens of times.
The episode is “Lisa on Ice” from 1994. Look closely at the crowd shot and you’ll see it. Yes, there they are! Eddie and Lou sitting behind Homer and Marge out of uniform. MIND BLOWN!
Over 20 years from it’s original airing and after multiple viewings, there are still things to find in this episode I had never noticed before. Just amazing.