
"The Good..."
CBS, A&E, USA, BBC America....
All have their shows available in On Demand the next day after airing, and all allow for FF through commercials...


"The Bad..."
The worst of the worst is FOX...
I believe it's the only network that insists that you sit through it's full boat of commercials no matter how long it's in On Demand... (This is even worse than watching the program live, where you can use your clicker to flip over to another channel during the commercials...when you're in On Demand you're stuck...it's downright barbaric...welcome back to the 1970s...

Consequently, when we've missed an episode of a show we like on FOX (like House or Bones) we've frequently waited till it showed up later in next season re-runs on USA or TNT...

"The Ugly..."
This is a mixed bag...
ABC makes you sit through their full boat of original airing commercials for three days, but then replaces them with just one minute of commercials between programming...(that seems fair to me; if a network wants to have one minute of promo time in exchange for being able to watch the programming whenever you want...a privilege you've already paid for...I can live with that...)
TNT does the same thing with it's original programming, but they will let you FF through the one minute...
SyFy has a really strange thing going on...(I don't know if they do it all the time; the only series we've watched on that station lately is Defiance )
You can watch the show the next day with the full boat of commercials and FF past them, but once they switch over to the one minute between segments format, you have to sit through that...