[Olde Bill]

John Neun (properly Johnny Neun) and George Burns are the only 1st basemen to ever complete a triple play single handedly in major league baseball.

Pi is a term from the printing industry (look it up) and comma (that little thing between 'Pi, You and Me') is also a musical term.

Amethyst is crystallized quartz with colour from purple to violet (anyone watch CSI?).