Sporting events. It's not usually that I need more than 9 frames at a time, but within another second I might need another 9 shots and so on..... It just doesn't empty the buffer quick enough to keep on going like that. Whereas with JPEG it obviously does because of the smaller size.
I also shoot surfing, and I most definately need more than 2 seconds of time to capture shots. I have found it to be one of the hardest things to shoot, and always shoot a TON of pics when shooting it. Not to mention that they are within good view for WAY more than 2 seconds!
It's not a huge deal though, I don't shoot sports that much, just for friends or family.