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.
The Storm Temple theme from Super Monkey Ball 1 also qualifies.
There are so many themes that qualify, it might as well have its own page.
Awesome: Video Game Levels: The "water slide" levels that seem to be a Super Monkey Ball tradition. Unlike most levels, the sides are heavily banked, so you can go fast for once. Chase (Advanced 18), the giant treble clef, from the first Super Monkey Ball is like no other level in that you have to chase after the goals as they run away (well, ski away) from you. The level design itself is quite fun, with the wide curvy track and banked sides.
Breather Level: The unusually merciful Bonus Stages. The set task is to collect several bananas within the time limit. However, unlike every other stage, you're not penalized if you run out of time or fall out.
Skeleton plays a rather extreme example here, don't you agree?note If Exam-C was just enough torture, Skeleton isn't that much of an upgrade from Slopes (Beginner 6-From 1) to make it that hard. And when you beat this comparably pathetic level, Tracks gets to torture you