Product demonstrations on the street.

 

1) Abalone
2) Red bean dessert
3) Sweet potato
4) Fish balls, beef balls, etc
5) Hairy crabs**

Generally in East Asia, people also seem to have a disproportionately high regard for these foods too:
- Durian
- Eggs that are either rotten or uncooked
- Offal
- Processed cheese
- Soy Milk
- Stinky tofu
- Spam
- Supermarket bread (ie: not fresh / bakery bread)
- Tapioca

* I don't mean "enthusiastic" about, I mean visibly thrilled at the mere mention. "Disproportionately", because of their bland taste / texture and their ubiquity.
** Perhaps this one is fair enough - it is a seasonal / traditional food.