Rudolph Valentino. Ray Charles. Jerry Lee Lewis dancing on pianos, for God's sake! Dance in Seattle had anything but a boring 20th century. We were prowling around the internet this morning and discovered that today is the anniversary of the date the city banned a really bizarre but popular 1920s and '30s fad called "dance marathons" within its city limits. That was enough to pique our interest, and we've spent the day researching what was......