The above is an hour long discussion about Lakoff's most recent book - The Political Mind - which, from skimming it in the book store the other day, appears to be a popularization of the work of Drew Westen.* Of course, Lakoff isn't just popularizing Westen's research, but applying it to his own previous work about the nurturant/strict father political metaphors.
I've read all of Lakoff's political books, with the exception of Thinking Points, and they've all been interesting and thought-provoking (even where you might disagree with Lakoff). I'll definitely be reading this book when I get a chance (my library has a copy in transit.)
*Westen's The Political Brain was one of the better books I read last year and is certainly one that Democrats who seem petrified that Republicans might attack them on any given issue for not being a Republican (e.g. FISA capitulation) should read.