Billy Corgan and His Enormous Ego, er, Smashing Pumpkins, visited the 9:30 club on Tuesday, and well before a single note was played, the evening was already quite the spectacle. Corgan threw himself a party on the release day of the new album, "Zeitgeist," although it really was more of a retro, faux-political campaign. The band rolled up late afternoon in classic cars with a fake Secret Service detail. Nominating convention-style posters and buttons were handed out to fans lined up outside. The interior of the club was festooned with Smashing Pumpkins flags and red, white and blue bunting.