A Japanese scientist has a mechanism that can form letters on the surface of
water:http://www.engadget.com/2006/07/25/researchers-using-waves-to-write-on-water/How long before this is miniaturized to coffee cup size? Can you imagine the
latte art? You could do latte movies!
-- 
"There is nothing new under the sun but there are lots of old things we
don't know." --  Ambrose Bierce

<Snip>
Coffee art! Here:http://www.justcoffeeart.com/index.html<Snip>">http://www.coffee-art.com/and here too:http://www.justcoffeeart.com/index.html<Snip>
 Argh - they'll be putting commercials in our coffee....