One school of thought teaches the value of modeling appropriate emotional responses to clients who may have trouble with it, or clients who are very cut off from from emotions. It can be very powerful for a t to say/show that they are angry about a client's abuse if the client is unable to accept that being hurt in that way would generally elicit a response of anger.
There are other schools of thought that believe a client needs to reach their own milestones without interference from the t, and yet others that teach total detachment. There are still other methods that focus solely on behavior modification. Most t's will use a combination of approaches to find what works best for a client, though they may be more apt to favor one or another theory. Generally, the psychoanalytic approach is the most detached (Freud's brainchild) and client-centered theory is the most concerned about the therapeutic relationship in the role of therapy. I think I would find a more psychoanalytic-style of therapy maddening, but it seems like that detached style works really well for you _Mouse.

Sorry, I went off on a tangent...