Nice memories Kelley; but you should have waited one year for the 50th aniversary of that performance!
About the Doors, to me they have been a similar case to the Rolling Stones and the Beach Boys: I didn't get them as fast as other favorite bands, but now I love them.
I really like every original album they recorded with Jim Morrison. If I had to rate them, it would be something like this:
The Doors (1967) ***** (excellent)
Strange Days (1967) ***** (excellent)
Waiting For The Sun (1968) **** (very good)
The Soft Parade (1969) *** (good)
Morrison Hotel (1970) **** (very good)
L.A. Woman (1971) **** (very good)
In my opinion they're one of the greatest American bands ever, along with the Byrds, the Beach Boys and Jefferson Airplane.