I can't believe I didn't think of this one before but the actor who played Doc on Fraggle Rock, Gerry Parkes, once guest starred on Today's Special, in an episode about alcoholism. It's actually quite disturbing because he becomes really cruel to the little mouse character who finds out about his problem (not to mention trashes the place). In the end he does agree to get help, but the show makes a very difficult but valid point:
Muffy: Gee from what I heard Phil just say, very soon he'll be OK!
Jodie: Muffy no, no it won't be soon. And it may be never. Some people can get better from a drinking problem but some people can't. But whatever happens it's up to Phil. I hope he makes it...
A lot of fans point out how unusual it is for any kid's show to be that blunt about drug addiction. But this is an important thing to know because the majority of the time addicts do relapse, often more than once. It's a lifetime problem that an addict will always have to deal with (if they choose to that is).