What makes a work a "cult" hit or classic or whatever?
I've thought about this for a long time. Recently I looked at a TV Tropes page for cult shows and movies and such and mentioned on the TV Tropes thread how I was surprised to see that Muppets and Sesame Street weren't included, and people told me that those are too well-known to be cult series, or were too well-known when they began and that a program becomes a cult favorite long after it started. But then that page listed things that I think were popular when they started or in their heyday. I saw Looney Tunes and Peanuts listed, and I feel those are as well-known and liked as the Muppets (I recall in the discussions section at TV Tropes people questioned the fact that South Park was listed).
And I saw a book a long time ago called Cult TV, which lists various cult television programs (haven't seen that book in years, it was at my high school library and I haven't been able to find a copy anywhere else). There were sections on "Lost Cults" (shows that were cult hits at one point but by 1985 had lost their cult status, I wonder if any of those regained their cult status since), "underground cults" (short-lived or fairly obscure shows with cult followings, kinda like how Muppet fandom seems underground), four-page sections on shows that were considered major cult hits at the time the book came out (I wonder if any of those are now "lost cults"), and a page listing "future cults", shows that seemed to have the potential of being a cult series but hadn't quite made it there at the time (I wonder if any of those made it by now... the only shows on that list I remember are Cheers and Green Acres).
But many of the shows in that book are shows that I'm sure were big at the time of their original broadcasts. Shows like Burns and Allen, I Love Lucy, Rocky and Bullwinkle (surprisingly the only animated show in the book), The Mary Tyler Moore Show, the first five years of Saturday Night Live (okay, so maybe that wasn't too successful until its second season...).
In other words, what makes something a cult TV show or cult movie?
On another topic: Have any fast food kids meals ever been rereleased as Happy Meals/Big Kids Meals/whatever-the-restaurant-calls-them? Today I saw a list of the top 25 greatest Happy Meal toys of the 1980s, and felt it would be cool if McDonald's would rerelease those toys (of course they'd need to work out licensing for most of the toys). Wouldn't it be cool if they rereleased old Happy Meal toys like the Muppet Babies or Tiny Toon Adventures ones?