Dr. Gaius Baltar is a fictional character in the TV series Battlestar Galactica played by James Callis, a reimagining of Lord Baltar from the 1978 Battlestar Galactica series. He is one of the show's primary characters.

"Home" is a two-part episode of the reimagined Battlestar Galactica television series. Part 1 aired originally on the Sci Fi Channel on August 19, 2005, and Part 2 aired on August 26, 2005.