You select a show based on the title, and it will link all airings of that show into "My Shows" and retain 28 days worth of backlog, plus pull in any On Demand or Catchup episodes that are available.
- Start and stop times for the recording are limited to what is displayed in the program guide / show listing metadata. You cannot modify the start or end times (to pad in either direction)
- Recordings are title based, and will record matching titles on any channel in your subscription package. (ie, if you get your local CBS channel and record "The Big Bang Theory" it will record episodes on that channel, plus TBS, plus any other channels that are airing syndicated previous seasons) There is no option for "just new episodes" - you're getting all airings of that show for a running window of 28 days.
- One recording is maintained per Title / Description pairing. If you pick a commonly aired show with an unchanging description like "BBC World News" at 10pm or SportsCenter, you will only get 1 recording of that program until you remove it from "My Shows" and re-add it. The fun thing is the behavior changes -- with BBC World News, it would record once and then stop, never to record another airing of the show again. With SportsCenter it will keep recording the latest airing of SportsCenter and replacing it in your recordings. That last one is fun if you try and work around the recording restrictions to catch an event that runs long.
For shows it was awesome -- especially with how it linked in the on demand and catchup episodes so you could have more things to watch right away. That was a big hit in the house for things like HGTV shows that were inherently non-episodic and so order didn't matter -- you could pick a show and immediately get a wealth of episodes to start watching.
For watching events (hockey games in our case) -- well, that's part of the reason we've resigned to paying the ransom that DirecTV requires. The DVR is really fussy with live events -- sometimes you can't start from the beginning until the live airing ends, sometimes it would lock up when fast forwarding through commercials while the program was still live, and on occasion it would jump straight to live when trying to fast forward and catch up leading to spoilers. The other deal breakers were the lack of FOX Sports regional alternate channels, occasional nights where the service was unusable, and the delay inherent in Internet video meant spoilers any time we'd get texts from friends who are also fans of the local hockey team.