Home loan mortgage rates are the best they've been in 39 years, largely due to the weak global economic climate. The most recent impetus has been was started out as a Greek Tragedy and has spread through most of Europe, leading to a flight to the safety of U.S. Bonds.
High demand for bonds has increased their prices and reduced their yields, which filters down into lower long term interest rates. We have since had other poor economic indicators, such as unemployment and jobs numbers.
With today's mortgage rates this low, it is especially important that you pay attention and compare loans, the lowest APR may not be your home loan. For more details, read the article below.