Cliff Stoll's 1,000 Klein Bottles

HN commenters love Cliff Stoll's earnest, playful personality and point to this as a delightful look at his unusual warehouse.

Numberphile visits Cliff Stoll, the man behind ACME Klein Bottles, and sees how he stores a thousand glass Klein bottles in a crawlspace under his house. A remote-controlled forklift fetches them.