I do remember quite a big thread about hypnobirthing - there are a few ladies on here who did the courses.
I did a lot of hypnobirthing reading in the last stage of pregnancy and used alot of it in labour & birth - I used only gas and had a 3&half hour labour - I firmly believe it helped ALOT! I didn't do the course as money was a bit tight, but I'd say go for it!!