I came across this group a couple of weeks ago, and they're doing interesting work with improv. They are the Applied Improv Network, and the're focused on applying improv skills in organizations. The key sentence from their mission statement is:
Our members are business professionals and academics who use improv tools, experience, and theory for human development and training in communities and organizations.
They've been around a few years and their blog has recent entries. They also have a conference coming up in San Francisco, scheduled for Novemeber.