Tivo was one of the original DVR pioneers, and it's still among the best. Adding to its dead-simple recording and time-shifting features is one of the best "second-screen" apps around. The Tivo app tells you about cast and crew for the show you're watching, then you can find other shows by the same director or with the same stars and set those to record. Of course, you need Tivo equipment and service to make it all work, starting at $149.99 for the set-top box. And then there’s the $14.99 per month fee as well.