Ok whoa, I just watched Rockandrolltennis's topspin serve video, read Luishcorreia's blog update about tennis, and watched those insane kick serves from ZPTennis on Youtube, and my brain exploded with fireworks as I realized something. They all have this weird pronation with their wrists where after contact the face of the racket ends up pointing away from the server! WHAT?!? Call me anything you want, (not really ) but I have never even KNOWN about this! I have been practicing kick serves where I toss correctly, swing up at the ball from about 7 to 1ish, but I don't twist my wrist like that. Please somebody explain this to me!