This is really a beautiful episode of the Simpsons. It is actually one of my favorite storylines (ala Babel). The way the short stories are interconnected help with the reality factor (something that previous episodes lack) and to look at the lives of other less known characters makes our untangible Springfield really feel like the small town next to yours.
My favorite little story is the one in which principal Skinner tries to hide the fire in his kitchen from the superintendent. Heh, it is just hilarious.
A great episode with great laughs and once again a fresh take on the series.