Sports has always sprouted lots of data. (I'm reminded of DJ Stout's forthcoming baseball book.) Technology means there's now even more. Sports dataviz is going to be huge.
I bought this F1 iPad app the other day. Even at twenty quid it's still really good. Live tracking over the cars during a race. Click on a circle and get more info.
Lovely 3D interactions, live data, decent visuals. (Graphically it's not that exciting but I'm sure there is prettier stuff coming...)
We will see more of this.