I had a sudden realization while watching FOX’s latest reality TV offerings the other day. Shows like “Cops,” “LAPD: Life On the Beat,” and the frequent specials like “World’s Most Graphic Deaths and Dismemberments” are among the most popular on TV. Why isn’t there an all-reality, all-the-time cable channel? FOX alone offers at least a couple hours of reality a day and the low-brow network consistently churns out the most sensationalized, exploitive reality specials, so I figure it’s a natural spin-off. Get on it, Murdoch. I’ll be the first in line to sign up.