Jethro Tull at the Garden..Maybe around 1980 or so...Didnt need to bring anything in to smoke..All you needed to do is breath...
Boy was it foggy in there...Next best is any of the Elton John concerts I have been too..Probally 7 or 8...3rd best was James Taylor at the Brockton High School in the early 80's..Probally only about 100 people there