I did see on one of the history channels (I've got so many) about finding two buried cities the details of which coincided with Sodom and Gomorrah and something about pillars of salt resembling a woman. Also, there is evidence of a cataclysm happening around the time Moses would have parted the Red Sea, which some researchers think may have been the cause there. It's fascinating stuff. Apparently the evidence refutes the story of Joshua bringing down the walls of Jericho but there are several Biblical stories that seem to at least have some basis in historical fact.
I'm religious but not a literalist, so I can handle being taught important lessons through the use of parable and analogy. It's interesting though.