Fridge Brilliance: You can collect money from different businesses and homes, but not the Power Plant or Moe's Tavern. It's because Mr. Burns is a cheapskate and Moe's more than likely broke.
Many characters have one-hour tasks at the Kwik-E-Mart, whether it's shopping, shoplifting, or robbing it. Apu's 1-hour task is one of his few that is NOT a Kwik-E-Mart shift. So who's at the register when everyone's there? You find out when you progress in the game and unlock Sanjay... whose 1-hour task is a Kwik-E-Mart shift
Richard Nixon has a very limited array of quotes, due his sparse appearances on the show. Therefore, his "Being sent on a job" quote is, "But that was probably just a facetious remark." There's only one job where he doesn't say that, instead, he says, "You'll pay!" Why? Because the job takes place at Springfield Penitentiary. Nixon is furious because you, unlike anyone else, actually sent him to prison.
"Funny Aneurysm" Moment: Marcia Wallace, who plays Edna Krabappel in the show, died in October 2013. This was during the 2013 Halloween Event, during which the characters can get possessed by ghosts, including Edna. It doesn't help that she doesn't speak at all in the game..
Heartwarming Moment: The loading screen for the Christmas 2013 update involves Homer walking with the gigantic finger as if walking with a good friend. This is opposed to the rest of the year, where most of the time the loading screen depicts Homer running from the finger in terror.
For Valentine's Day 2014, Homer and the giant finger are walking on a beach with hearts floating around them.
For the Thanksgiving 2014 update, you can let Hugo eat Thanksgiving dinner with the rest of the Simpsons.
For the monorail update, Homer fist bumps the giant finger while conducting the monorail train.
In the background of one of the loading screens for the Christmas 2015 update, we can see Santa Flanders giving presents to The Woobie orphans Patches and Poor Violet. Not to mention Homer and the Giant Finger have teamed up to throw snowballs (or in the finger's case, roll a giant snowball).
Hilarious in Hindsight: The tutorial in the game has Homer say that he is not 100% at fault with the explosion. The Winter 2015 event reveals that Baby Gerald was the one who is responsible for the explosion, making his statement an Accidental Truth.
Nightmare Fuel: During the 2012 Halloween update, when Springfielders are attacked by zombies, they would be covered in streaks of blood and then become zombified. Some of the zombified characters looked kind of unsettling.
The Scrappy: The elves from Christmas 2K14, for being annoying and the subject of an Anvilicious message about the treatment of immigrants. Though it looks like the creators foresaw this and had them be treated very poorly in the second half of the event.
Seasonal Rot: People didn't like the Clash of Clones campaign, which went on for too long, had some lackluster rewards, and forced you to build ugly castles that took up a lot of time and resources to make, and took up a lot of space.
Win Back the Crowd: The 2015 Superhero event has been very well revived in comparison to the above example.