Donnie Says Vacuum!

I was fascinated by these pneumatic systems when I was a kid. The title, 'Donnie Says Vacuum!' is an homage to my favorite episode [Slow Donnie] of the tv show 'Just Shoot Me!' ;-) (pic via Wiki)

You can even get a Swatch delivered via pneumatic tube!

oobject - 15 pneumatic message networks: "Ted Stevens was right, the Victorian Internet consisted, quite literally, of a ‘Network of Tubes’. Paris, London, Prague and Vienna had extensive networks of pneumatic tubes which delivered messages in capsules. In New York 5 million mail messages passed every day through an underground pneumatic system, and a network in Berlin delivered hot meals directly to people’s homes suggesting that kitchens would no longer be needed in the future. Today these systems can still be purchased where they are used in places like hospitals where samples are passed between departments."

Misc. links.
"Just Shoot Me!" Slow Donnie (1999) - Memorable quotes