While the Castro has that fabulous organ, the Red Vic (1727 Haight St at Cole) wins the prize for best popcorn, a very important aspect of our movie-going experience. Tonight the Red Vic screens the D.A. Pennebaker documentary, Ziggy Stardust and the Spiders from Mars, a cinema verité cult classic depicting David Bowie getting ready for and playing one of the last Ziggy-era concerts, featuring glam rock guitarist extraordinaire, Mick Ronson (who grew up Mormon).......