So I googled http://spark.rstudio.com/ and I got a cool list of Shiny Apps on the R Studio Shiny Server ( experimental!)
I suppose the next stage is to have some pre built themes to further enable or facillitate Business Intelligence kind of visualization so people do not have to build the UI.R from scratch
Also a gallery for the best of Shiny is here http://www.rstudio.com/shiny/showcase/
http://spark.rstudio.com/trestletech/ShinyDash-Sample/
http://spark.rstudio.com/jkatz/SurveyMaps/
http://spark.rstudio.com/jkatz/DialectMap/
http://spark.rstudio.com/jbryer/gambler/
http://spark.rstudio.com/jbryer/timeline/
http://spark.rstudio.com/systematiced/MarketDashboard/
and others too
http://spark.rstudio.com/ram/shinySketch/