Shaming us all

At National Review's The Corner, John Derbyshire pins an ethnicity on Fox's Bill O'Reilly (whose ancestry is in Cavan):

O'Reilly was a gent [in David Letterman show appearance]. I have my problems with the Big Mick, with his pomposity and populism

All of a sudden, those Guinness "Brilliant!" ads don't seem quite so embarrassing.