Not sure exactly when they are, but the ones I can remember (please anyone correct me if I am wrong!) off the top of my head are:
Woman of the Year: Voted for by your group as the woman other members find most inspirational. Not just a weight loss related award - it may be that you particpate and share lots of things in group, offer lots of support, etc.
Man of the Year: The male equivalent of the above.
Young Slimmer of the Year: Similar to the above, but specifically for those aged 18-20.
Couple of the year: Similar to the above, but awarded to couples who attend group together.
Miss Slinky: Again, voted for by your group. Members vote for the woman they think is looking great, someone they find to be inspirational, etc.
Biggest Loser: The person in group, male or female, who has lost the most weight that year. Based solely on weight loss alone.