I managed to hurt my lower back about two weeks ago. Work colleagues, who have seen me waddle around the department have all been encouraging me to do yoga or pilates (I seem to be the only person at work not doing yoga/pilates!). I've told them I'll think about it (the answer is probably going to be 'no').
I decided, instead, to go the physiotherapist. I've never been to the physio before and I would say that it has been a generally positive experience (I guess it helped that the physiotherapist was ridiculously good looking).
I was pleasantly surprised that the work he did on my back was able to bring almost instant relief from the original back pain, though he did inflict a great deal of short term pain with his squeezing and poking and pressing.
It's still not 100% though so I'm going to have to go back for repeated visits.
I don't mind.