Check out this video. Recognize that blonde dork who is singing? Watch the whole thing. It gets all kinds of awesome around 1:45. (more to follow)
http://www.youtube.com/v/r5V8ecsrxeYThat is Jerome Flynn, who plays Tyrion's protector and all-around badass, Bronn, on the show. Apparently, he was something of a pop star in the UK back in the 90s.
Someone said in the comments that they should have him and Peter Dinklage performing a shot for shot remake of this video, in full GoT costumes, as a blu-ray extra. How awesome would that be?