HBO. HBO is short for "Home Box Office".
More TV Trivia
Howard. "The Big Bang Theory" character Mrs. Wolowitz was never seen, but voiced by the late Carol Ann Susi.
Homicide Detective. "NCIS" is a spin-off of "JAG".
Steve Carell. Steve Carell left "The Office" at the end of Season 7.
Jon Voight. Jon Voight was nominated for an Oscar for his performance in "Runaway Train".
Zen. Your moment of Zen has been part of the Daily Show's wrap-up since 1996.
Lannister. Lena Heady plays Cersei Lannister in "Game of Thrones".