Of course, good a relative term and different for each person. I just find myself laughing less at newer episodes compared with the classic years of the early ninties. From snpp.com, here's an example of a recycled storyline:
Mommie Beerest (#GABF01 / SI-1601) 30 Jan 2005 When the health inspector, an old friend of Moe's, dies, his replacement is not as lenient with Moe, and orders it shut down unless Moe can make a long and expensive list of repairs. Homer, who just paid off his mortgage, decides to re-mortgage his house to pay for the repairs. However, when Marge finds out, she becomes Moe's business partner, and decides to turn the bar into a British pub, which becomes a success.
Homer the Moe (#CABF20 / SI-1220) 18 Nov 2001 After Moe heads for a bartending school to brush up his business skills, Homer is charged with keeping tabs on Springfield's premiere watering hole. But when Moe decides to make his tavern over into something more hip and modern, a disgruntled Homer opens his own bar in the Simpson family garage. Guest stars R.E.M.
Flaming Moe's (#8F08) 21 Nov 1991 Homer helps invent the hottest drink in Springfield. However, when Moe steals the recipe and turns Moe's Tavern into the hottest spot in Springfield, Homer vows revenge. Guest stars Catherine O'Hara and the Rock band Aerosmith.