It is not
commonly known that the
sense of taste in people can
vary quite a bit in how
sensitive it is.
Most of the population have very similar levels is how strong their sense of taste is. However, there are small amounts of people that are drastically different, due to the number of taste buds they have on their tongue (and this can actually be observed by using a food coloring to see how dense yours are).
This difference has noticable effects on people. Those with really low numbers of taste buds, for example, are more likely to be alcoholic because the strong taste of many types of alcohol don't affect them as much. Those with high numbers, on the other hand, are often picky eaters, as many foods get too strong and bitter - broccoli is very often disliked by these so-called supertasters.