The nation has now had a weekend to mourn the passing of Jack Valenti, man who made possible the groundbreaking cultural artifact known as the special unrated DVD version of Turistas. Yet, beyond such obvious accomplishments, there's still so much more to know about the MPAA chief/L.B.J. confidante/ Napster destroyer. Happily, on a dreary Sunday evening like this, there's no better family activity than reading the week's obituaries! But how do we know which ones will be appropriate for the kids? Alphanumeric codes, obviously! The following obits have been submitted for review to the Gawker Weekend Rating Board; out of respect, we are following the brilliant, equivocally definite guidelines set forth on the M.P.A.A. website.