IK-Like Orient Rig
A Quick setup Orient Rig / Look At Constraint. There are times it is simpler and far more convenient to animate orientations in a look-at style situation.
Copy the code below and put it in a shelf icon in Maya. Select the object you wish to set up, and hit the button.
Pick your Up and Out axis (the option for reverse axis is there, -X, -Y, -Z) and GO!