As off-the-wall as I think Glenn Beck is most of the time, it'd be a lot easier to not like him if he didn't make so damn much sense.
In this video from February he explains (with the help of a gigantic graph!) the historical price of houses in the U.S., adjusted for inflation, of course, and finds that they tend to stick around $100K. You can ignore the parts with Obama, if you'd like; they really don't affect the analysis.
Now, I haven't independently confirmed his figures, but they do seem reasonable, and if the trend line he draws actually continues like that, we're totally boned. I don't personally think that prices will continue to plunge like they have been, but we were long overdue for a major correction in housing prices.