Wed. October 10 2007, 11:47:42 PM
DAVE: Open the pod bay doors, HAL
HAL: I'm sorry, Dave. I'm afraid I can't do that.
and...
DAVE: HAL, I won't argue with you anymore, open the doors!
HOMICIDAL HAL: Dave, this conversation can serve no purpose anymore. Goodbye.
For some reason, I obtained MP3 versions of those quotes, and a few other ones on June 29th-ish, shortly after I had rented the movie from the library.