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: Fat Albert
Character Derailment: Invoked. Spending time in the real world causes Fat Albert and the Cosby Kids to behave contrarily to how they were in the show. Going back to the cartoon world reverses the effects.
Tear Jerker: The final scene. You see Bill Cosby and the real (as in REAL) world counterparts of the Cosby Kids, all aged and forlorn, Mushmouth's counterpart even in a wheelchair... standing before the grave of Albert Robertson- their Fat Albert. As Bill walks by each of them, the character they inspired appears, even his own, while they all look on at their departed, beloved friend with grief-stricken faces... accompanied by painfully sad music. However, it turns into a Crowning Moment of Heartwarming when the gang holds a fun-spirited race in the graveyard, with the old Mushmouth being pushed by the old Old Weird Harold. Despite their old age, they're still kids at heart- just like the characters they inspired.
They Changed It, Now It Sucks: Mushmouth never had or needed a translator in the series since most of what he said was clear to it's audience, but the creators decided to put Weird Harold as the translator for some reason but it is clever at times.
Took a Level in Kindness: Both in and out of TV Land, Rudy is significantly nicer and more helpful than his original cartoon counterpart.