This afternoon a friend called me and told me where to find a great photo opportunity. I grabbed the 40D, 100-400mm and the monopod and headed out the door. I had to hike a mile or two to find it, but his directions were spot on. This little fella let me get within about 10' of him.
I'm still trying to get use to a monopod, and this was my first real test with the IS on this lens. The IS saved a lot of shots today!