I haven't tried it, but I read this review with interest. The reviewer mentioned that room size was important:
I've heard some exceptionally poor reviews of the PS Move. I've heard that the tracking is glitchy, the space needed is inconvinient, and most of the games out for it are poorly designed. Most of the games I've seen to to calibrate all the time for movement and even then it doesnt react very well to your moves.
The definition of "too close" or "too far" changed on a game-by-game basis, too. One would say eight feet, another five and yet another 3.3 (one meter). Playing Move games in my den – a small room where I sit maybe four feet from the TV – was hit or miss.
But then added this:
This said, when I met the proper line-of-sight and distance needs of the hardware and software, the tracking and accuracy of the Move was astounding.