Depends. I know I'm out of the ordinary, but for most of what I shoot I use AF-S single point and use the focus and recompose technique. A holdover from my film days. I'll use AF-C 3D when shooting birds in flight or other action subjects.
Like Jake, "normal" for me is AF-A and single point, I want to pick the focus point in most cases... ( I will occasionally swith to matrix for some scenery stuff..