Blender, Camera Track an OBject

I was trying to keyframe a camera to follow an object by hand yesterday.  A combination of things including my misunderstadning of how keyframe easing made that a lot less fun than it needed to be. Lots of horrible interdependencies in my keyframes and jerky camera moves. There is a constraint that will allow the camera to track an object.  And you can easily check your easing in the graph editor.   Another great video from Grant Abbit:

For some reason I was thinking interpolation and easing were connected and I was treating it like black magic... then I watched this video that shows how to see the interpolation in the graph editor.  Duh! Why didn't I think of that...  :-) 

With these 2 videos I'm able to smoothly track an object flying through space from a stationary camera which is exactly what I wanted.  But for spaceships it probably makes sense to have the camera track an empty that the ship is attached to.  That way things like shake can be added to the ships coordinate system and will show up on camera.
This blog really is just notes for me on how to be less of an idiot :-)
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