Letterman does a Palin 'Top 10' list again

Guess David Letterman is feeling emboldened to mock Sarah Palin again now that she's stepping down as governor of Alaska. The CBS "Late Show" host has made a couple mild references to Palin following his spectacular blow-out with the governor last month, but Tuesday night Letterman devoted a Top 10 list (which is what kicked off the feud last time) to messages left on Palin's answering machine following her resignation. Here's Letterman: