I liked Greensleeves since I was a kid, but at the Fillmore, its played at the end of every show, has been going back to the first Bill Graham Show. He wanted a way to let the entire staff know that the show was done. So that was it, play Greensleeves. Matter of fact the show sheet for every show even says "Show's Over: When you hear Greensleeves."
We have a CD with something like 15 different versions of it, from the Fantasia on Greensleeves by Vaughan Williams (very pretty, get the version by the Academy of St. Martin's in the Fields) to the most popular one (at least at the shows I'm there for), which is the John Coltrane one from Africa/Brass, but the Jeff Beck version is tasty, and we've got Richie Blackmore and Jethro Tull, and a bunch of others, so we can get pretty close to putting on a Greensleeves in keeping with the spirit of the show.