Swine flu is no laughing matter, particularly once it starts sidelining our aging boy bands. Case in point: Backstreet Boys, who have been forced to cancel both an appearance on the CBS Early Show and a signing in support of the breast cancer charity Pinktober due to Brian Litrell falling ill. A press release we just received assures us that Litrell is receiving good care and that other members are taken precautions. Details, you ask? Sure: