In addition to the dozens of small and local acts i've seen, here are the well-known bands i've been able to check out:
Pantera (best metal shows ever)
Machine Head (best band on the planet right now)
Los Lobos
Metallica
Jimmy Page and Robert Plant
The Who (Quadrophenia tour, and 'regular' tour)
Rage Against The Machine (great live band, but not much interaction with the crowd. Bummer.)
Buddy Guy
Nicholas Tremulis Orchestra (very, very good)
Cesar Rosas
Eric Clapton
The Mermen
The M's
The Redwalls