Can't see that this has been posted yet, so here it is.
You're in the Movies only £9.99 at Argos. (Usually £39.99)
Worth it for the camera alone :) Here is some info from the site:
* The ultimate social gaming experience allowing friends to act out mini games that contribute to making an entertaining and sharable movie sequence in their living room or over Xbox LIVE.
* Players are filmed by the Xbox 360 camera performing different sets of mini games and attributed points based on their results. At the end of a set, the player with the most points receives an award.
* Videos of the players performing mini games actions are segmented to subtract the real-world background, and the resulting video footages are integrated into pre-rendered mini movies.
* Complete with Xbox 360 LIVE vision camera
* For ages 3 years and over.