e to the power of pi minus pi (e^π-π) equals approximately 19.999099979. The fact this number looks suspiciously close to 20 is a pure mathematical coincidence.
Cummingtonite is name of an existent mineral discovered in 1824 near the town of Cummington, Massachusetts.
When Yoda was lifting Luke's X-Wing from the swamp, he output approximately 19.2 kilowatts of Force power.