If you want a cool example of language change over time, or just want to feel old (it's a 2-for-1 deal): I'm reading a German translation of the first 3 books of the Sprawl series (apparently published before the 4th book came out), and in the foreword Neil Gaiman pointed out how the meaning of the first sentence of Neuromancer has changed drastically. It refers to the color of a TV screen tuned to a dead channel, and to most people around my age or older this is obviously fluctuating gray and white static, to a generation younger it's blue, and if my son reads this when he's older it'll be black.