Halloween with Enrique Iglesias

Nelson Ascencio plays Enrique Iglesias opening his door to a princess, an astronaut and a cowboy. When the kids recoil and call him Ricky Martin, he takes it as an insult, announces who he really is and, deciding they simply don't know his music, counts himself in for a hip-swivelling performance on the porch, pulling up his shirt as he dances. The children are unmoved: they complain that his singing hurts their ears and walk off. Enrique calls after them with an odd final bribe and, left alone in the doorway, keeps dancing and chanting that he can feel the rhythm.

This was one of five trick-or-treating doors in the episode's Halloween runner; the others belonged to Cher, Macy Gray, Angelina Jolie and Janeane Garofalo. IMDb notes that Ascencio was best known on MADtv for his Ricky Martin impression.