I think the graphics are as good as a "Pong" clone can get. I give it a 9/10, because the author definitely could have made the menu better.
The gameplay is obviously going to be boring after a while, it's a pong game. But the "Play against a friend" mode is definitely the focal point of this program, which I have enjoyed alot.
The switching from having to press 2ND then enter, then clear, is kind of annoying. When I first go this program, I ran it, and it seemed to be stuck on the .Pong. empty screen, and I thought my calculator froze. But, that is me being stpuid and not the programmers fault.
I am very excited to look through the source code for this, and I thank the programmer for his generosity. Keep up the good work!