Doesn't that give you a perspective camera, though?

Here's how I did it.

1) Go to Panels > Orthographic > New > Front

2) The new Front camera should be selected. Rename the new front1 camera to "back"

3) In the "back" camera's channel box, enter -180 into the "rotate Y" field.

4) Make an object, like a sphere.

5) Pick the "back" view and hit "f" to center the view on the sphere.

Then, it should behave just like you'd want a "back" view to behave.

-- Mark