http://www.youtube.com/watch?feature=player_detailpage&v=fB4Dqas-rIM#t=157s Surprisingly it's on grass and by Rampras (of all people). Funny because I never thought of him as a guy with such an effective kicker. He hits another big one right after that one and check out the serve at 0:22 as well. Baker and Delic are having such a hard time returning it and even comment on the outrageous bounce at one point. Only other people who I've seen kick it this high are Karlovic and Isner.