Images and video featuring real-life people doing real things are in very high demand. The era of cheesy posed images of business handshakes and smiling office teams are fortunately way behind us.
To expand my portfolio in that direction, I'm looking for people who want to model for me. Mind you, if you're looking for classic portraits, it's better to work with someone doing art photography.
Of course, we can always work out a deal, where we split the time between stock photos as well as some portraits for your own portfolio, so we both get something out of it.