Drahtwerk's iWebcamera iPhone
app was actually released late last week but it, ironically, only worked with a Windows-based PC. The company has now finally rectified that situation with some Mac drivers, however, which will at last let use your iPhone as a webcam for your Mac just like you've always wanted. We haven't yet had a chance to try it out ourselves, but you can grab the app yourself from the App Store right now for $4.99, and snag the Mac drivers from the company's website linked below.
[Image credit: Brian