The first was the Grateful Dead back in 1995, just a couple of months before Jerry died. That was probably the best one, too...but I'm not sure...been to many many great concerts over the years.

The last was a local band called Lincoln's beard, it was at the art gallery they own in Vancouver, Washington.

I can't tell you the worst, because no matter how mediocre the band or singer is, I get caught up in the energy of it all, their energy, that of the audience....and I love it. I have unfortunately purchased some cds based on this, but they were missing something, and I think it was the collective spirit or soul. It doesn't translate very well sometimes.