Playboy Offers Nude Penpals to U.S. Troops: LOS ANGELES – Playboy magazine is calling its centerfolds to active duty. The men's magazine announced Tuesday it hopes to boost the morale of the U.S. military by offering a free pen-pal program that lets soldiers communicate with its nude models. "Operation Playmate" allows military personnel to e-mail letters to the magazine, each of which will be answered with an autographed photo and message from a Playmate.