Well knock me down with a feather! On tonight's broadcast of the CBS Evening News, Katie Couric covered the controversy over Michelle Obama's luxurious 60 room Spain vacation during the continuing economic crisis.The report, which clocked in at a lengthy 2 minutes and 29 seconds, was made by Sharyl Atkisson from the White House and included graphics showing the cost of Michelle Obama's round-trip airfare to Spain on a government plane and the per diem cost for the estimated 70 Secret Service agents on the trip:• Transport on the Air Force version of a 757. That's $146,000 for the round...