I just noticed this gem while skimming the list of packages built into Emacs:
landmark neural-network robot that learns landmarks
Yes, Emacs is no ordinary text editor. It’s an operating system, a religion, an entire universe unto itself. Here are a few other winners.
animate make text dance bruce phrase utility for overloading the Communications Decency Act of 1996 decipher cryptanalyze monoalphabetic substitution ciphers hashcash Add hashcash payments to email life John Horton Conway's 'Life' game for GNU Emacs master make a buffer the master over another buffer meese protect the impressionable young minds of America morse convert text to morse code and back spook phrase utility for overloading the NSA line eater studly StudlyCaps (tm)(r)(c)(xxx) uce facilitate unsolicited commercial email
We’re laughing with you, Emacs, not at you, promise! We kid because we love.