in Sunday's episode of The Simpsons, titled Flaming Moe (airdate: 1/16/11), Moe convert his bar to a "gentleman's club" for gay men. At one point, one dancing man says another glides like an "Arapaho Ghost Dancer."
This reference comes out of the blue and goes right back into the blue. It's offbeat, if not weird, and not particularly funny. But it shows that the Simpsons' writers are willing to look outside the box for their cultural references. And it continues last season's streak of four Simpsons episodes with Native references.
For more on the subject, see Indians in The Simpsons.