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: Wii Fit
Crack Ship: There's been a lot of shipping between Wii Fit Trainer and Slender Man, due to both of them being near-featureless bleach-white humanoids.
Funny Moments: If you miss the last punch in Rhythm Kung Fu completely, a random pot drops on your Mii's head.
Most Wonderful Sound: The music that plays after you complete an exercise with a good rating. And, if you choose to do jogging and get more than 100% rating, you hear lots of very adorable cats mewing at you.
Even among the game's fans, there are people who dislike the trainers, both for their Stop Helping Me! moments and for the Uncanny Valley effect they exude (see below).
Stop Helping Me!: When the Yoga/Strength trainers repeat themselves over and over. Try to work toward exhaling through your nose. Let's do some deep breathing together. Inhale as the blue circle shrinks.