They???re the folk that love pseudo-witty jargon like 30 Rock and Mad Men, and those are two of the most boring shows on TV IMO. I agree with the point that someone made about serialised shows being the new 10:30pm slot-fillers though. 24 has been airing there for years and thats one of the best shows on TV, and now LOST, Prison Break, and other shows are inhabiting that slot as well.