Oh, yes, YES! Thanks for that reminder!
The liquid-in-the-straw is one of things that one would never see in Standard Definition (or barely). We'd need the High-Definition (HD-DVD, HDTV broadcast, Blu-ray), the 70mm film, or a reading of The Making Of Kubrick's 2001 to know about that.
• stop liquid food in straw from draining back down
Which reminded me of another one ..
• change floating tray "swinging on strings" to zero-g motion