Yes it has been claimed for years that the Eagles HC ripped off Jethro Tulls "We used to know". The Eagles did tour with Tull and the first clip is the Tull song. The second is Ian Anderson from Tull talking about it but accepting it is a great song that the Eagles did albeit based on his music. Have a listen, it is very similar I have to say.

[ame]http://www.youtube.com/watch?v=xny0Uj4--tk[/ame]

[ame]http://www.youtube.com/watch?v=LMh0FS3rcnA&feature=related[/ame]