I doubled over with laughter when I saw a parody of Irish stepdancing over at Compass Points. However, before getting to it, there may be some of you who've never seen shows such as Riverdance, Lord Of The Dance or the like. Specifically, this parody mocks Michael Flatley's opening number from Lord Of The Dance, 'Cry Of The Celts'. Here it is, if you don't know it. (Flatley's performance begins at about the two-minute mark.)
And here's the parody of his performance. I don't know who the performers are (the video is identified only by the title 'Lordi Jinak'), but they do a magnificent and very funny job!