It was business as usual on last night's live installment of CBS's Big Brother, despite talk of a walk-out by the six remaining houseguests. Cassandra — a communications officer with the United Nations — became the latest contestant to be banished. She received 46 percent of the vote, just ahead of Eddie's 41 percent. Meanwhile, CBS has decided to air the show's finale on Friday, Sept. 29 at 8 pm/ET, the same night the network will rebroadcast Survivor's two-hour final episode. CBS originally planned to air the final Big Brother Sept. 30.