2008 was a great year for cities until the economic crisis overtook us all. On Smart City we talked to more than 100 of the best thinkers and doers who are working to make cities great. To close out the year, we're reprising some of my favorite guests to share their wisdom on how to make 2009 a better year for cities.

From the entrepreneurial spirit of Bryant Park Corporation's Dan Biederman to Ed Glaeser's riveting historical view of cities, and from fascinating trends like demographic inversion to the green initiatives of Seattle brought to us by Mayor Greg Nickels, we've got the best of the best on this week's show.