I have to give thanks to Hot Erik for posting this on my Facebook wall in the first place. I had no idea it this happened and I'm thrilled to death to have seen it.
What we have here is a video from the Graham Norton Show (Thing I Love). Sharleen Spiteri (T.I.L.), lead singer of the band Texas (T.I.L.) is performing the Olivia Newton-John (T.I.L.) classic "Xanadu" (T.I.L.) from the movie (T.I.L.) of the same name. She's awesome.