Sometimes it's fun to conduct your own process control or improvement experiments to help you understand the abstract statistics taught in Six Sigma. Click here for a test of your reflexes. The site times how quickly you react to virtual sheep trying to break away from the virtual herd. You can analyze the data in a variety of ways. For example, you can create x-bar/R charts, try different strategies and use ANOM or ANOVA to see if they work, calculate confidence intervals on your reaction time, etc..
By the way, the best I could do was "Bobbing Bobcat." Back in the day I'm sure I would've been a "Turbo-charged cheetah!"