These are some nice/interesting/benchmark terms to look up in encyclopedias.

- Algorithm
- Anarchism
- Andromeda
- Antarctica
- Axiom of Choice
- Bible
- Brain
- Buddhism
- C (programming language)
- Capitalism
- Cat
- Censorship
- Chess
- Chicxulub
- Color
- Communism
- Computer
- Creative Commons
- Deep Blue
- Democracy
- Determinism
- Dinosaur
- Dodo
- Dog
- Doom (game)
- Earth
- Elo
- Encyclopedia
- Ethics
- Euler's Number
- Football
- Fractal
- Free Software
- Game
- Gigantopythecus
- Go (game)
- GNU project
- Hacker
- Hanging Gardens of Babylon
- Hitler
- Homosexual
- Human
- Information
- Intelligence
- Internet
- IQ
- Japan
- Jesus
- Life
- Lightning
- Linux
- Logic
- Love
- Mammoth
- Mathematics
- Mariana Trench
- Mars
- Milky Way
- Moon
- Morality
- Mount Everest
- Open Source
- Pacifism
- Pedophilia
- Pi
- Pluto
- Prime Number
- Quaternion
- Quran
- Race
- Roman Empire
- Sine
- Stallman, Richard
- Sun
- Tetris
- Time
- Troy
- Tyrannousaurus Rex
- UFO
- Universe
- Unix
- Usenet
- Valonia Ventricosa (bubble algae)
- Venus
- Video Game
- Woman
- World Wide Web