Bayesian Drug Tests
In the Pipeline blogger and pharmaceutical research chemist, Derek Lowe reports on the prospects for using Bayesian statistics in clinical drug trials. The Bayesian approach, which he explains more precisely than I could, essentially lets you revise your estimates of how likely success is as you get more information from experiments. For new drugs, fans say, it could "make clinical trials easier to run and more meaningful at the same time."
If Bayesian spam filters are an indicator, a Bayesian approach is definitely the way to go. SpamSieve, a Bayesian filter for Mac OS X, has pretty much solved my spam problems.