You weren't there when Johnny Cash played his last S.F. show. You weren't there when Miles Davis opened for the Grateful Dead. You probably weren't there for any of Metallica's legendary anniversary concerts, and you almost certainly weren't there on July 16, 1968, when Big Brother and the Holding Company, Richie Havens, Jeff Beck, and Sly and the Family Stone all graced the stage of the Fillmore West for one holy show. That's okay. You can still walk up to the Fillmore and gaze at the walls of the Poster Room — now festooned with only a portion of all the venue's historic concert posters — and feel all the glorious feelings. You know, the feeling of, "God, I wish I had been there that night." The feeling of, "I never knew those two could share a bill." And, most special, the feeling of, "I am but a tiny speck in the universe of pop music and will only get to witness a minor fraction, if I am even so lucky, of all the riches it has to offer." Then you can go downstairs to the ballroom, take in one more show in the place's long history, and know that someday, someone else will see the poster from tonight hanging on the walls of the Fillmore, and shake their head in awe.