R help - Jun 2012 - access to raw data sets for six-sigma training

Dear R-help,

I'm trying to train myself how to do six-sigma analysis (with R) and
visualization (with d3.js), but all I can find is summary xls sheets,
never the raw data they made the charts from.

Does anyone know where I can get access to large amounts of quality
data? Industry/application doesn't matter.

Thanks!
Peter