In suspending his campaign to deal with the bail out bill before the House and Senate, John McCain canceled his appearance on tonight's Late Show with David Letterman, a program to be recorded today in New York City. The show is normally produced at 5:30 PM EDT, but MSNBC reported it was to be taped at 4 PM today.Minutes ago, the Late Show Web site replaced John McCain in the “Tonight's Guests” list with the far-left ranter/McCain-basher Keith Olbermann of MSNBC.