I believe the GD to be the greatest band ever to perform. 2nd place goes to all the many JGB incarnations. Legion of Mary in 74-75 was incredible. Get some of those recordings and puff a fatty and melt into the zone. Pre-legion Jerry and Merl from 72-73 is the most beautiful music i have ever heard.
My first Dead show was MSG 9-12-91. A Terrapin for the ages...
So about 20 shows from there until the end...
Moved to CA the year after Jerry Died

On a side note there is a tribute to Martin Fierro happening at the Fillmore in SF on 8/8/08. Martin was a member of Legion of Mary, and Zero, and he passed away this year. A remarkable man by all accounts. Steve Kimock will be MC'ing the benefit and Zero will be playing. It is fixin to be a memorable night. Kimock is impressive!