Play of the Day -- Top 10 Rick Perry excuses

Twenty-four hours after a much-discussed memory lapse at a presidential debate, Rick Perry capped off a Thursday of damage control with humor, this time of the intentional variety -- as opposed to the awkward "oops" that accompanied his nationally televised brain freeze. In an appearance on the Late Show with David Letterman, Perry continued a charm offensive that began with a round robin of early morning news show interviews by presenting the evening's top ten list -- excuses for why he forgot the name of the third Cabinet-level agency he intends to cut if elected president.