HAL: My instructor was Mr. Langley, and he taught me to sing a song. If you’d like to hear it I can sing it for you.
Dave Bowman: Yes, I’d like to hear it, HAL. Sing it for me.
HAL: Daisy, Daisy give me your answer do,
I’m half crazy...
HAL: Yes Dave.
Dave Bowman: Open the door HAL...
5.56mm