Developers NetBlender have just announced their BD Touch software for the iPhone and iPod Touch.  Using the official Apple SDK, they've come up with an app that links your handset, via WiFi, to your Blu-Ray player; not only can you control it remotely, you could use it to transfer content from the player to your iPhone, direct from the Blu-Ray menu structure.  It'll also let you manage a media library (both of owned and rented titles, together with suggestions for films you may enjoy), view trivia and commentary-style information on the iPhone's display in-sync with the on-screen playback, and use the iPhone as a controller in discs that offer gaming features.   

The second video is even more cool: it shows how BD Touch could enabled Blu-Ray disc makers to put a digital copy of their media onto your iPhone or iPod Touch via WiFi, all with a straightforward interface and no need to get your hands dirty ripping the film with software:

NetBlender are offering their BD Touch SDKs as free downloads for developers to put compatible content onto discs and to create iPhone applications that are compatible with Blu-Ray media, opening up the possibility of films having free iPhone games and other apps, available through Apple's AppStore, available to coincide with the in-store film release.