CSNY is still one of my favorite groups after all these years. Their voices blend perfectly, and some of their songs really are poetry. I also am a great fan of Jethro Tull.
All of them are excellent - been listening to ELO's "Mr.Blue Sky" lately - don't even know why, probably the Beatle's influence.
A friend of mine who's really into ELO told me that Jeff Lynne's biggest influence was the Beatles and that he idolized George Harrison. The Traveling Wilburys must have been a thrill for him!
I would have loved to have seen them play...really miss George. While My Guitar Gently Weeps is one of my top 5 favorites of all time. Very soulful.