Haven't watched these DVDs in several years. Matter of fact, not since I had the old Sony Trinitron CRT television. Never noticed it before, but for about 10 minutes around the middle part of the "Bootsie Nightingale" episode, the disc suffers from a VERY noticeable "interlacing" issue, jagged lines during heavy movement. Fairly certain it's not a disc defect, just something wonky with the way Sony Home Entertainment mastered the episode onto the disc.
Geeky Rant Over.