Big Brother 1, also known as Big Brother 2000, was the first season of the American reality television series Big Brother. It began on July 5, 2000 and aired on CBS for 88 days, concluding on September 29, 2000. The Houseguests were. Brittany Gae Petros Cassandra Waldon Curtis Kin Eddie McGee George Boswell Jamie Kern Lima Jean Jordan Josh Souza Karen Fowler William Collins