Meh.
It's nothing to write home about, but it's not bad I guess.
I also noticed a bug where the computer cheats. Twice when I had placed a 3-in-a-row move, the computer placed OVER my piece instead of blocking the fourth space. Somehow that doesn't seem fair. :-/
Oh well. I never cared much for tic-tac-toe anyhow. That brings up another thing.