While Friday night's Williamsburg incarnation of the Portlandia Tour featured the likes of Adam Horovitz and Hugh Cornwell (of the Stranglers), St. Vincent's Annie Clark showed up at Saturday's stop at the Bowery Ballroom, where she performed Pearl Jam's "Black." When Carrie and Fred said that every night's show would be different, so they ain't lyin' bout that (BV Chicago ...