It's not enough to say that you "can" do it, it's having a compelling reason "why."

This article from Mobile Marketer highlights a recent joint by Universal Studios to put viewers in charge of their Blu-Ray players with added iPhone-enabled content.

Apple has an app for the iPhone that enables you to use it as a remote already so nothing new there. But the concept of letting the user choose his/her preferred way of interfacing with hardware is one whose time has long come. Look for insane expansion in this arena.