In which a bygone errand, developing vacation snapshots, becomes so widespread that it gets its own chain of drive-thru kiosks, and Ken's mom looks great in a red knit jumper and gold polyester turtleneck. Certificate #38597.

In which four mysterious cones are unearthed from proto-Celtic Europe, perhaps holding untold secrets of the calendar and cosmos, and John is surrounded by the happy nudists of the Danube. Certificate #23490

In which a periodic "atmospheric river" from the Pacific Ocean threatens to put a quarter of Californians underwater in the very near future, which scares Ken so much that he decides to drill holes in his couch. Certificate #23973.

In which the legal and creative rights of a crested macaque are debated on the world stage, and we learn Ken wants to look like Popeye. Certificate #2720.

The Onion Futures Act (Entry 867.NU1105)

In which two savvy farmers try to corner the market on onions by buying up the whole Midwestern supply, and John compares Gerald Ford to a Jesuit. Certificate #25671.

Bob Dylan's Christian Period (Entry 138.AC1631)

In which rock's most cryptic genius shocks the world by being "born again," releasing three uneven gospel albums and annoying a lot of concertgoers. Certificate #39323.

Canning (Entry 180.LK1219)

In which doomed Arctic explorers and a spiritualist's vacuum sealer help revolutionize the science of food storage, and John reveals that his "dueling scars" are actually from drinking cold canned pasta. Certificate #42072.

The Four-Color Map Problem (Entry 495.NU2653)

In which over a century of mathematicians are unable to solve a geometry problem straight out of a coloring book, computers provide their first ever math "proof," and Ken challenges John to map a donut. Certificate #28876.

The Church of the SubGenius (Entry 222.AC1605)

In which a fictional pipe-smoking salesman invents a new quasi-religion for ironists, Discordians, and weirdos, and Ken believes he could have prevented the Trojan War. Certificate #31147.

The Rural Purge (Entry 1091.PS6503)

In which CBS cancels a full slate of country-fried programming, reinventing TV and marginalizing rural America, and John somehow watches an awful lot of Hee Haw. Certificate #36841.