You've seen the video for Gotye's "Somebody That i Used To Know." And you've probably seen parody videos, cover versions, tributes, etc. So has Gotye, and I guess he was quite flattered. He put together the ultimate mashup of all those remixes. He said:
"Reluctant as I was to add to the mountain of interpretations of 'Somebody That I Used to Know' out there online, I couldn't resist the massive remixability that such a large, varied yet connected bundle of source material offered," he wrote, explaining the impetus for the project he calls "Somebodies: A YouTube Orchestra."
"All audio and video in 'Somebodies' is from the YouTube user videos featured, each of them a cover or parody of 'Somebody That I Used to Know,'" he explained. "No extra sounds were added to the mix." He even posted a very helpful list of every single clip used in the project on his blog, with links to each individual video.