RoboCup is an international robotics comptition founded in 1997 with the aim to promote robotics and AI research. The offical goal of the project is that:
By 2050, a team of fully autonomous humanoid robot soccer players shall win the soccer game, complying with the official rule of FIFA against the winner of the most recent World Cup.
There are a variety of different leagues within the competition including RoboCup Soccer, Rescue, Simulation, @Home and RoboCupJunior. Visit the RoboCup website?for more information.