Here is a topic for me! I love the Ringo one. It is really one of the best early episodes there is. Being that the show didn;t get downright hilarious till season 3. But season one had its charm, and two you cold really see that it was starting to hit its mark, and that episodes is one of the best.
Maybe this is of topic if you only wanted references in other episodes (and you guys probably caught these the first time), but as to references in the George episode (which I like a lot, as I do the Paul ...