These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: South Park: Bigger, Longer & Uncut
And You Thought It Would Fail: With massive Executive Meddling from Paramount and the MPAA and interest in the show waning after only the second season, Trey Parker was convinced that the film would be a major flop and made it as a last hurrah for the series. Instead it was a commercial success and critically acclaimed as a smart and funny satire and greatly raised attention to the show, which has now taken The Simpsons' place as the gold standard of modern American satire.
Awesome Music: The whole soundtrack, particularly "Uncle Fucka", "Blame Canada", "Kyle's Mom's a Bitch" and "What Would Brian Boitano Do?" (especially the DVDA version)...
A censored family friendly version Terrance and Phillip: Asses of Fire is replaced with the original and is only one minute long. A couple years later a family friendly PG version of Freddy Got Fingered that was three minutes long was featured as an extra on VHS and DVD.
When Terrence and Phillip are strapped into their electric chairs, Terrence comments that his is worse than Phillip sucked on his dick and took a picture. A similar situation would happen in the episode "Cartman Sucks".
"Blame Canada" is Sheila's Villain Song and establishes her and the other moms as enemies of Canada (including Terrance and Philip). Years later, South Park: The Stick of Truth plays the song when the player character goes to Canada with the other kids to get help from Terrance and Philip, among other Canadians.
Even Satan, despite being considered as evil by default, is sympathetic.
The Mole. He clearly didn't have the happiest childhood, considering the fact that his mom apparently tried to abort him on her own with a clothes hanger and it's implied that she's abused him ever since.
"HOW WOULD YOU LIKE TO SUCK MY BALLS, MR. GARRISON?"
"It's fucking Windows '98!"
Moral Event Horizon: Sheila crosses it when she shoots Terrence and Phillip dead, even after Kyle tries to reason with her.
Retroactive Recognition: Non-actor example: At the end of the Le Resistance song, a kid runs past with the resistance flag and trips. Who is this kid? None other than Butters, before he reached anything resembling main character status.
Seinfeld Is Unfunny: While the movie is still well-loved and stands out from the rest of South Park for being an all-out theatrical-ish musical, some fans find the more recent TV seasons to be more entertaining and/or relevant because they deal with more recent and familiar topical humor (and also have animation that's had years to mature since BL&U).
Strawman Has a Point: Sheila and the other moms early on, as their kids were indeed being badly influenced by the movie and that Kenny died imitating a stunt from it. They only become villains (well, Sheila, anyway) when they decide to blame Canada for their troubles.
What an Idiot: Pretty much Sheila had, by far, created one of the most idiotic and disastrous acts. She went to extremes to make the world a better place for hers and everyone else's kids by having Terrance and Phillip executed and start a war against Canada, when she could've just created a petition to get the Terrance and Phillip movie banned from their country; or, alternatively, a petition to actually enforce the age restrictions that the movie already had.
The Woobie: Kyle, who has to save the world from a misguided moral crusade started by his own mother.
Terrance and Phillip, who are arrested, sentenced to death, and ultimately shot dead, just for exercising their 1st Amendment rights (or whatever Canada's equivalent is). Technically, they did influence a child to commit suicide, but considering the kids were watching the movie without permission, and were emulating a scene where a character dies doing the exact same thing thus suggesting it was a bad idea...