What song did HAL sing as Dave deactivated him in 2001?
The song was "Bicycle Built for Two" (a.k.a. "Daisy, Daisy"). This song was the very first tune played on a computer, at Bell Labs in the 1950's. The implication was that HAL was "devolving."
Random Trivia Question:
Who is the hero in Lois McMaster Bujold's sci-fi novel Barrayar?