Perfect Tic Tac Toe AI

The AI might be perfect, but the controls are not. I clicked near the bottom right corner, and it didn't register a move for me, but the AI went again. That being said, Tic Tac Toe is not difficult to solve. The connect four game definitely seems more fun.

http://i.imgur.com/imchk.png

I really like the minimalist design of the site. The other game I found is more challenging:

http://connect4.cwoebker.com/

The connect 4 ai was not perfect at all. I beat it 3/3 times.

Source?