Besides the fact that iOS 8 made it possible to receive your phone calls, text, and FaceTime from your iPhone 6 or 6 plus to your Mac, iPad Air, or iPod touch there are a few apps worth the jailbreak.
Movie Box is the top for me, I personally have a huge movie collection and I'm constantly watching new releases on blu-Ray & DVD or on demand with verizon Fios.
Fios on demand is 5.99 a movie for a rental on HD. Enter Movie Box where you can stream any movie from your iPad to your Apple TV, google chrome cast, of Fire TV for free.
New releases are on here weeks in advance. We watched Get on up the James Brown movie weeks ago from the app & now it's out on DVD today.
Here's how to install: