Tufte’s brand new book
Originally uploaded by mac steve.
from slides of his reboot8 talk

WikipediaSparklines were invented by WikipediaEdward Tufte, author of a number of thoughtful and inspiring books on the presentation of visual information. Sparklines are described by Tufte as “Intense, Simple, Word-Sized Graphics“.

I am sure you have seen some sparklines in the web, but here is what I have found interesting in sparklines in addition to the sparkline graph option in Swivel.

You can find more at the Sparkline Wiki.