This is probably the BEST sports app I've had to date. I mean, MLB.com At Bat is REALLY good, but The Masters 2009 Live [iTunes link] is FREE and streams LIVE video over Wi-Fi, 3G and EDGE. And it looks REALLY good on 3G.
Aside from the great streaming video, you got a live scoreboard, tee times and course stats.
It's FREE, so go ahead and download it if you're a big golf fan.