The Audjoo Helix is a pretty widely capable software synth, complete with crazy effects and the like, but it inspired me to learn more about what people around the world say when someone sneezes. Japan has one of the most complex systems of sneeze reaction with a different response per number of sneezes sneezed.
"Once being praised ('ichi homerare'),
Twice being detested ('ni nikumare'),
Three times being admired ('san horerare'),
And four times, you are going to catch a cold ('shi kaze o hiku')."