I’m in the middle of customizing my equipment and trying out features and seeing what works and what doesn’t, something I didn’t really do when I had the more updated Olympus E-PL2 (shame on me I know). The Olympus Pen digital cameras (as a lot of other cameras as well with mixed results) have a feature which shifts autofocus to your subjects’ face.
I turned on the Super Control Panel which Olympus cameras have hidden by default and now Face Recognition is now easily accesible. These two shots were taken in my usual Street Photography style and holding the camera a la Daido Moriyama. In my opinion, despite the E-PL1 being a few years old this feature is very reliable and works better than my old Panasonic GF1, G1, and G2. I presume that as you move up in the Pen digital series the autofocus is probably faster and as accurate.