The "Say Time Watch" by Tao Mao displays words instead of numbers. The watch allows its user to create his/her own sentence for a particular time of the day so that if you want it to say:"quitting time" at 5:00 p.m. the end of your working day, you can set it up to say that. You also have the option to change the font and its color to whatever you want and the sentences can be edited or inserted using a usb line connected to a computer.
The article I'm borrowing this story from posits an interesting point: what does the watch display at 5:20 p.m, or at 2:14? Does it display a sentence every time? Or you can choose when you want it to display a special sentence?