Check out BBC iPlayer for:
Madness on Wheels: Rallying's Craziest Years
Programme covering group B up to the dark days of it being banned with a kind of 'how did they get away with that' commentary.
Fantastic footage from the early 80's and interviews with some of the top people at the time - well worth a watch. Not sure how long it will be available on the iPlayer, it was broadcast Tuesday evening.
Originally shown on Sunday so presumably ends next Sunday. Group B got the blame but much (including the Portugese Rally situation) would have happened anyway. We were having to drive round spectators on the RAC before Group B came along. I once saw a female spectator pushing a pram along the stage on a 1960's RAC.