My friend and a co-collaborator Steve Jandrell of CandidAdvisors (I consult to CandidAdvisors) has introduced me to Belbin Team Roles. Steve is certified in administering the Belbin, and we used it so we might collaborate more effectively.
Well, I loved it and encourage you to consider a Belbin workshop for your team. While I am promoting this for a partner, I have been through it as well, and have seen how utilizing the knowledge gained about self-perception can impact a team's achievement.
The Belbin was developed by Dr. Meredith Belbin and his team who conducted research at Henley Management College in the UK over a period of nine years and studied the behavior of managers from all over the world. Their book, Management Teams - Why They Succeed or Fail was cited by the Financial Times as one of the top fifty business books of all time.
Steve has developed a workshop around the Belbin, and you can read more at CandidAdvisors