Season 6, Episode 19
At a Renaissance Fair, Lisa encounters a fortune teller who predicts she will meet and marry an English college student in the year 2010.
The most hilarious moment occurs when the groom-to-be meets the Simpsons family and is greeted with a burning flag which is extinguished with compost.
The episode won an Emmy Award in 1996 for Primetime Emmy Award for Outstanding Animated Program, becoming the third episode of The Simpsons to win the award.
(source: Simpsons Wikipedia).
There are references to:
The Wizard Of Oz, The Mask, Ace Ventura: When Nature Calls and Octopussy.
See here for more details.
Notes & Screenshots: Lord Heath