First off you have Gary Busey there as a mentor ok that's funny as he should be a patient the man has some issues, but he gives the show it's comic relief. Jeff Conaway (rip) loved him in Taxi is in such denial over his addiction his last name should be river. Dr. Drew has his work cut out for him and seems to care for the patients.
I think the show has it's touching moments and it's funny moments,altogether it is an entertaining show. But I don't think the show is as hard hitting as it could be, lets face it we know it could delve deeper into the problems of these addicts but sense it for television it only skims the surface,of the real problems at hand.
But I do find the show worth watching cause there is something appealing at watching how addicts coincide with each other and the reactions are priceless from comedic to awe inspiring to sad and beautiful.
So in closing I think the show has merit as entertainment as a helping tool the jury is still out on that one as I see some of the cast members do return needing more help or the show just could need a shot in the arm as far as ratings go who knows.