Because of posting policy of one single video per week, many interesting models don't fit the specific time that I find them, laying then in my 'to post' folder almost forever in many cases...
But because this section doesn't live only of new creations, I decided to bring up today one model with some time, that some should have seen already highlighted in other famous LEGO blogs months ago.
A LEGO Tic Tac Toe play robot, using one single RCX, made by Arthur Sacek back in 2004 and later relived in a YouTube video by its author, at the middle of past year.
The utilization of the RCX with a compressor and other pneumatic elements, makes it even more interesting.
You can find additional photos from this robot, at Arthur's website.