We have concrete evidence that the big three fantasy cover clichés (“castles”, “glowy magic”, and “swords”) are in decline. The 50% reduction in castles can only mean one thing.
Orbit Books, The Chart of Fantasy Art, 2009
(spotted via Boing Boing via Making Light)
You might then enjoy this chart of Heavy Metal band names:
http://www.angrymetalguy.com/wp-content/uploads/2010/01/flow_heavymetal.jpg
I saw an even funnier flow chart once about Prog Rock, but I can’t seem to find it.
Both charts are GREAT.