When Springfield legalized gambling, Robert Goulet guest starred as himself, set to perform at Mr. Burns' casino until Bart tricks him into performing at his tree house.

The Simpsons Season 5 Episode 10 Quotes

Homer: (Wearing glasses) The sum of the square roots of any two sides of an isosceles triangle is equal to the square root of the remaining side!
Man: (From inside a bathroom stall.) That's a right triangle, you idiot!
Homer: D'oh!

Lisa: I'm not a state, I'm a monster!
Homer: No, Lisa. The only monster here is the gambling monster that has enslaved your mother! I call him Gamblor, and it's time to snatch your mother from his neon claws!