My current ride ('03 Cannondale R600) is "Lucille". This came from the movie "Cool Hand Luke" where George Kennedy, upon seeing a sultry woman began chanting "Lucille, Lucille,...". When someone inquired how he knew what her name was, he replied, "anything that looks that good's just got to be named Lucille".
Building up a Look frame currently which I'm thinking of naming "Lady" so that that I can her "Lady Look"!