Best concert you've attended

Hesperion XXI: Jordi Savall, Montserrat Figueras, Arianna Savall, Ferran Savall and Pedro Estevan at the Getty Center, LA 2004. 

Woodstock '69

Too many to tell but some of the top ones are:

12/31/78:  The closing of Winterland.  Started with the showing of Animal House followed by New Riders of the Purple Sage, then The Blues Brothers backed up by Tom Scott and the LA Express (Joni Mitchell's backup band), then the Flying Karmazof Brothers. At midnight Bill Graham came down from the upper balcony on a giant joint as the Dead broke into Sugar Magnolia. The show included 3 sets with breakfast served at dawn. Most incredible experience of my life. I was living in Anchorage, AK at the time and going to school at the University of Alaska in Fairbanks AK as a Elec

Electrical Engineering major. Flew from Fairbanks to Anchorage, then to Dallas/Ft Worth where I saw the Dead before driving to SF in my 1976 Dodge 1976 Crew cab Power Wagon that I had driven down to DFW the year before. Drove to SF for the 12/31/78 concert which was also my 24 birthday (yes my birthday is 12/31/54).

Pretty fricking incredible!!!!! 

The Dead shows in Vegas in 1993, 1994 and 1995 were also pretty incredible

1993:  Opening act:  Sting

1994:  Opening act:  Steve Winwood and Traffic

1995:  Opening act:  Dave Matthews

The 1993, 1994 and 1995 shows were all 3 shows each year!!!!!!!