In response to my email, these guys claim they called the drawdown of the market:
Yes, my RIX Index issued a Sell Signal on the Nasdaq on 5-11-06 and a Sell Signal on the NYSE on 5-15-06. We smiled while the market dropped. Jim Rohrbach
http://www.mcoscillator.com/
They have the best track record on market timing. The service has been around for many years.
You can study there timing model based on relative strength of Russell Growth vs Russell Value and test it. It tests well for market timing.