an opportunity of a lifetime

Ruth-Anne: You bought me a grave for my birthday?
Ed: Do you like it?
Ruth-Anne: Yes, I do. It's a beautiful spot, Ed. A great place to spend eternity.
Ed: They'll dig your hole here. You'll have a great view of the mountain.

Ruth-Anne: What should we do now?
Ed: Now? What do you mean?
Ruth-Anne: You know what I'd like to do? Dance.

Ed: Dance? Where?
Ruth-Anne: Here. On my grave. It's an opportunity of a lifetime, wouldn't you say?

[from Northern Exposure, episode "A Hunting We Will Go"]