Treasury yields are the lowest in 200 years. Leverage Academy's blog has a graph. http://leverageacademy.com/blog/2011/03/04/200-years-of-u-s-treasury-yields-short-the-30-year-ticker-tmv/  I updated it for this year.

Soon, investors will start buying equities in order to increase the yields in their portfolios. Watch the spread of high-yield bonds over treasuries for a signal. When this spread starts to narrow, investors may be tiring of fear and swinging back to greed.