This is the final episode with a credit to longtime Simpsons score composer Alf Clausen, who was fired from his position shortly before the season began airing.
[1] Marge is out for the evening with Luann Van Houten, Bernice Hibbert and Helen Lovejoy, and asks Homer to take care of Maggie.
After thinking about her tastes, Marge resolves to decorate a late-pick-up room for Springfield Elementary like the set from The Wizard of Oz, but Lisa remembers there never was one.
Marge buys decorations and tools for the job from the Get It and Regret It Hardware store, only to discover that Fat Tony turned the post office into a whorehouse.
Lisa mentions sharing the spotlight like on the television series South Park, but realizes Trey Parker does all the work.
Absent an inherently interesting premise, guest star, plotline, or performance, watching an average Simpsons these days means totting up what fringe benefits you can find, subtracting things that either underwhelm or actively piss you off, and determining relative worth.