i went when pregnant with joshua
i actually enjoyed mine, it was really informative
as soon as we arrived we did pregnancy excersises to a video tape (quite embarasing! lol ) and then we would sit down on our maps and the woman would show us a baby coming out of a pelvis and how all that worked and we often practised breathign excersises..
oh and at the begining we'd all sit in a circle and have to tell each other about how our week had been

i will probly go again, more so for anthonys sake, just so he has an idea of things