Whimsical Mathematical Theorems and Names in Physics

A friend of mine who is a filmmaker is looking for good examples of simple (& whimsically named) theorems in mathematics, as well as whimsical names in physics. Here's my list so far -- can anyone think of more?

Topology:

• hairy ball theorem : one cannot comb the hair flat on a hairy ball without creating a cowlick. http://en.wikipedia.org/wiki/Hairy_ball_theorem
• Seven Bridges of Königsberg http://en.wikipedia.org/wiki/Seven_Bridges_of_Königsberg

Graph theory:

• Four color map problem: how many colors does it take to color a map? http://en.wikipedia.org/wiki/Four-color_theorem (first major theorem to be proven using a computer)
• Travelling Salesman Problem: Given a list of cities and the distance between all of them, find a shortest possible tour that visits each city exactly once. http://en.wikipedia.org/wiki/Traveling_salesman_problem
• three cottage problem. http://en.wikipedia.org/wiki/Three-cottage_problem

Whimsical names in physics:

• Quark: taken by Murray Gell Man from a James Joyce novel and the line “three quarks for Mr. Marks”
• Gluons: particles that “glue” quarks together
• WIMPS: Weakly Interacting Massive Particles
• Boojum: in the physics of superfluidity, a boojum is a geometric pattern on the surface of one of the phases of superfluid helium-3, whose motion can result in the decay of a supercurrent. The boojum was named by David Mermin of Cornell University in 1976. He was inspired by Lewis Carroll's poem The Hunting of the Snark. http://en.wikipedia.org/wiki/Boojum_(superfluidity)
• neutrino: “little neutral one” in Italian
• quark types: up, down, strange, charmed, top (was initially called “truth”), bottom (was initially called “beauty”); quarks also come in three “colors”: red, blue, and green
• black hole
• worm hole
• inflation theory
• GUTS: Grand Unified Theories
• the Higgs boson is sometimes called the “God particle”

Here’s an interesting essay on the subject:
“The Physics of Silly Names”
http://thoughtsarise.blogspot.com/2009/03/physics-of-silly-names.html