While he had been a soldier in Her Majesty's armed forces in Iraq, Danny Pink dug 23 water wells for the villages he stayed at. It was an accomplishment in which he took great pride. (But he knew people would only think he was killing people over there......)
"23" is one of the cosmic numerals that make up the Valenzetti Sequence as seen in 'Lost'. It has become my favorite because there seemed no earthly reason why it should get so much play outside the series about the mysterious Island and yet it keeps popping up.