In this era of Twitter and Facebook, when any twist and turn in a celebrity relationship (even Al and Tipper!) can be broadcast worldwide by the nanosecond, there's little left to the imagination. Maybe that's why the love letters between Elizabeth Taylor and Richard Burton seem so intriguing. Some of the letters from Burton are included in upcoming book "Furious Love: Elizabeth Taylor, Richard Burton, and the Marriage of the Century," by Sam Kashner and Nancy Schoenberger -- and excerpted in the July issue of Vanity Fair.

We all know their relationship was stormy -- to say the least. And the letters show that. In one, Burton writes, "You must know, of course, how much I love you. You must know, of course, how badly I treat you. But the fundamental and most vicious, swinish, murderous, and unchangeable fact is that we totally misunderstand each other."

While we're on the topic of letters of a certain age, I like the looks of "Letters to Jackie: Condolences from a Grieving Nation." It includes some of the letters sent to John F. Kennedy's widow after his assassination. It's by Ellen Fitzpatrick, who's featured in this CBS News video about the book.