Jonathan Coulton's version, above [released 2005]
Glee version [url=http://youtu.be/Yww4BLjReEk]used in an upcoming episode[/url].
Coulton releases his music under Creative Commons Attributions License, which means his work is free to use for non-commercial use. Glee has ripped off his song and is not only airing it in the show [for money], but is selling the track on iTunes [also for money]
Thoughts?