I think I missed this, Watch the Simpsons’ amazing Game of Thrones intro "Tonight's [March 4th, 2012] episode of The Simpsons opens with a couch gag that warms our fantasy-loving hearts. Watch as Springfield is transformed into Westeros, with King Burns overlooking his nuclear-powered domain — and eying the Iron Couch. It's not the real thing, but it will have to hold us until April. Hat tip to Ross for the heads up!"
I'd embed the video here but it wasn't obvious how to an the versions I saw on YouTube suck.