For a while, the Poppy Ergo Jr people have been building really cool things with Snap4Arduino, and the latest one just takes the whole cake!
Watch this robot ruthlessly beat the daughter of its creator at TicTacToe and celebrate its victory:
Gilles, the father of the defeated human, writes about it here.
For more Snap4Arduino + Poppy projects, take a look at this gallery, curated by Pierre Rouanet.