[pvaldes]

Tongue receptors are the same in all humans. If fresh, properly prepared and cooked by a competent cook, lobsters, shrimps and mussels are one of the finest foods available. If an insect or spider can taste like this I will try it.

Cats are said to taste pretty much like rabbit. Edible, but nothing really special.

[maxerickson]

The ability to taste some compounds varies. For example:

http://en.wikipedia.org/wiki/Phenylthiocarbamide

So everyone can taste bitter, but not always from the same things.

A similar thing is probably at work in people who find raw tomatoes extremely unpleasant.

[pvaldes]

I grant you that point. Food-allergies are also a problem.