DVD Easter Egg: Season 9, Disc 3. When Lisa hold up the puzzle on the back of her lunch (near the beginning of the episode), press the number 6 on your DVD remote to unlock a full episode length commentary from Bill Oakley and Josh Weinstein. They discuss their time spent working on the show, and address a few important issues.
The Simpsons' family members that showed up took some time to be made, but the staff enjoyed the results. All of the male Simpson family members that showed up were voiced by Dan Castellaneta, the voice of Homer. He had asked for the recording tape to be run for about 20 minutes, so he could do many different voice variations that would fit the different men, but still be close to Homer's voice.