ARGH! I'M FALLING DOWN THE SLIPPERY SLOPE! I guess my new beat is op-ed columns of the weird, because I can't help commenting on this one, which claims that because of one Pennsylvania and one Canadian court case rewarding parental rights to biological fathers in addition to the lesbian mothers who raise the resulting children, "America, get ready for the group-marriage debate." The hand-wringing author is Elizabeth Marquardt of the Institute for American Values, a New York-based think tank that appears to believe the Iraq war is grand and divorce ruins kids forever. I adore the title of Marquardt's new book: My Daddy's Name Is Donor. --Dana Goldstein