A few years ago a colleague reported the following on an Air Canada DC-9 arriving, heavily, in Toronto.
During the taxi in, the Captain came on the PA and said:
"Ladies and Gentlemen, I'd like to report that the First Officer was responsible for that landing."
pause
"But I can't, it was me."
He then went on to apologize and express his hopes that he hadn't given anyone a fright.
(I would have liked to have seen the F/O's face after the first bit)
I agree with the supporters of the concept. A little levity will help diffuse the various levels of concern down back, and a little humility on the part of the pilots is good for the soul.
In an earlier life I used to cover large expanses of salt water as a maritime patrol captain/crew commander. The motley lot of navigators and other sundry folks down back were far more vocal critics of landings than any passenger on a commercial operation. At least the pax don't try to weasel a round of drinks out of us.