Washington, D.C., political insiders were treated Wednesday morning to an unforgettable exchange of 19 e-mails. The players: an aide at McBee Strategic, a major lobbying firm, and one Elizabeth Becton, scheduling secretary to Rep. Jim McDermott, D-Wash. The aide's sin: He sent an e-mail addressed to Becton as "Liz." The episode is not without precedent. Ex-Sen. Elizabeth Dole is renowned for turning icy when anybody uses the nickname "Liddy." Elizabeth Taylor once erupted when fifth husband Sen. John Warner began an admonition with the words "Now Liz . . ." "Don't you Liz me," Taylor shot back, sticking a finger...