At Agile 2008, in the Agile Playground, Don McGreal and Mike McCullough adapted a series of experiential learning games to accelerate the adoption and understanding of Agile. Hats off to Don and Mike for creativity and sense of humor.
The recipe cards for the games are listed at Tasty Cupcakes. There's an analogous list of exercises geared toward Extreme Programming (XP) at XP123.com.
For anyone who's suffered through a silent, non-participatory Sprint Retrospective, the potential remedy lies in a Tasty Cupcake or two. The Tasty Cupcake game called The Story of our Sprints is a promising exercise to liven up your Sprint Retrospectives.
Have fun with these.