> ABC, NBC, and I believe CBS is now doing this. I believe it
> is some FCC rule?
>
Yes it is -- in addition to showing the required 3 hours of E/I programming each week, all stations (not just the networks) must also clearly identify it as such during the entire program. Until a few months ago, they were only required to identify E/I shows at the start of the program.
As for PBS, I thought they were exempt from E/I, as they already show more than enough of it each DAY. I guess I was wrong.