the only thing that pops into my head when i watch your video is -- how many countless hours, days, weeks of actual time on a tennis court did you spend? and how many hundreds of thousands or millions of balls do you think you hit to get that good?
oh and then the idea that there are a handful of people out there who are even better.
thanks for posting balla. we really do need to convince TennisWarehouse to host a tennis tournament this summer and either make it an open tournament (lots of hacks and a couple of gems) or an invitational. and then post videos.