I should know this, but I must be getting old-timers disease!  I want to be able to rotate the camera in place, and not have it rotate around something (which i have no idea what).  Basically, I want to be able to rotate with the camera staying put.  I have tried everything I can think of, but it just won't do it.  It's like the rotation point is not centered in the camera, but outside of it at some distance.  How do I get the rotation point to the center of the camera again?

there are 2 types of cameras: revolving and ... I forgot, sorry - you need the one which pivots around its own center

The answer is Dolly, btw.  The scenes that I normally do don't make it as imperative to use the Dolly camera, but there are a few, like the one i am doing now that require it to get the correct perspective easily.  I had forgotten that. 

Make that dumb (dolly) camera work, yeah.  :)  

you could also go the long way around if you just like to be complicated

set the regular camera's x y and z to all 0 then parent the camera to some primative also at 0.  then move the primative around.

that actually does help for having to move the camera deep into a scene.  you know say you have some building and you're not shooting near the center space.  you can use point at on the camera to get the standard camera rotation around some object far from center, or just move the primative further.