On the one hand, calimari is either food of the gods, or it’s shoe-rubber. I’ve never found any in between.
Tomatoes might also be in this category: A fresh, home-grown tomato is amazing, but don’t even bother with most of those red things sold in grocery stores. I will admit to some middle ground, here, though: Grape tomatoes are an acceptable substitute when the good ones are out of season, and there are a few home-grown varieties that aren’t as good.
On the other hand, good pizza and good chocolate are nearly as heavenly, but you have to try really hard to make bad pizza or chocolate.