CBS has just posted a new app to the Apple App Store that turns your iPhone into a Star Trek communicator. You can flip the communicator open by flipping the phone and it includes all sorts of Original Series sound effects. Even cooler there is a phone app included, which can access your contacts, so you can make calls right from the communicator.
Right now it’s a bit pricey at $1.99, but if you’re a hardcore Trekkie/Trekker with an iPhone and just can’t live without it; you can get it here.