Just a couple of years ago, it was big news when CBS’s Vietnam War drama Tour of Duty leaked word that it was about to set a precedent by killing off a minor character. This season the mortality rate for featured players went way up. First, Gary (Peter Horton) was in a fatal car accident on thirty-something. Then Rosalind Shays (Diana Muldaur) plunged to her death on L.A. Law. Don’t quote me on this, but has anyone else noticed that the formerly hearty Cliffey is looking a little peaked over on Cheers?