I found these articles of interest :
http://www.guardian.co.uk/lifeandstyle/2009/jul/27/sports-drinks
http://www.spma.net/recoverydrinksfin.htm
I'm going to be looking for others to read up on over the next few days too see what i can find. I suspect a lot of the Beebs report relates to energy drinks rather than recovery drinks and i would agree that a drink wont increase your ability at all, but i do think they aid you. Perhaps its the marketing angle that the Beeb are hitting out at.
As for protein shakes, ive always thought, you are probably just as well off eating a good diet to increase muscle mass.
I do tend to use Recovery drinks which are mixed with water rather than milk however, only using energy drinks, if i am doing 1hour+ and even then i often wont use them except on race day. I have used gels and energy tablets during races and they have seemed to have an effect, but i will only use these once ive passed the half way sage of a long run HM +.
In regards to puma statign that their trainers make you faster, then thats a no brainer, of course they don't.
And people taking these products and not exercising, well its their own fault if they haven't figured out that they are packed full of sugar!!!