This isn’t based on anything more than my viewing habits, but here you go-
CSI Vegas, because it’s WAY beyond its sell-by date. The changing cast is still great, the stories interesting, but without William Peterson’s Grissom and Warrick Brown (Gary Dourdan) it’s just not the same. Still, at least super-nerd David Hodges (Wallace Langham) is still in it. Let’s also hope CSI NY joins CSI Miami at the bottom of the briny deep too. Arghhh.