X is For ...
X - An 8-point tile in Scrabble. Rich and I both enjoy playing Scrabble, but we enjoy a more relaxed game. We don't like "cut-throat_ Scrabble.
XB - I love our Scion xB. It is the very best car I have ever driven.
Xenobiology - If and when we Terrans meet up with extraterrestrial lifeforms, I think the best candidates for the new field of xenobiology will be the companion animal veterinarians and guardians, i.e., "dog and cat people". We're already well-versed in living with and communicating with non-human species.