johanJack Moore of takes a look here at why Johan Santana continues to be successful on the mound.
With the amount of HRs and line drives Santana gives up limited, and the amount of essentially automatic outs he induces via the infield fly, Santana’s low amount of ground balls has no impact on his incredible peripherals, making him still one of the best pitchers in the game today.
Here's a list of 2009 infield fly ball leaders,  HR/9 leaders,  line drive % leaders, and ground ball % leaders  (You'll have to sort the stats yourself by clicking on the stat name).Any names pop out at you?