I also use the giottos rocket-air, and it works great on my camera, but also at getting the dust out of my macbook's keyboard. Really useful and safer than canned air. (cheaper in the long-run too!)
Canned air is way better for cleaning computer keyboards though.
Pro-tip: If you are cleaning the sensor with canned air or turkey baster or otherwise, you should hold the camera with the sensor on a down angle. Otherwise the dust you've blown out just tends to fall back into the camera