People who call every night, just as you are putting dinner on the table, to:
A. offer a great, once in a lifetime opportunity;
B. ask to contribute to their very important marketing survey; or
C. say not to hang up because this isn't an annoying telemarketing call, but rather, a survey to seek opinions about telemarketing calls.

People who laugh in a really fake way to show just how happy and easy going they are - when they are not

People who dress their toy dogs in scaled down human clothing.

Vegetarians who define their preference by saying they don't eat anything with a face.

People who sneeze on you on the bus without even trying to cover their nose.

Shoppers who say that they were first in line, even though they know perfectly well that you were ahead of them.

The makers of shoes that are comfortable in the shop, but that gouge weals into your feet once you walk outside in them and can no longer return them.

Sour-faced people who sit in the window seats of nice restaurants.

(This is an extract from the list, updated as more cull suggestions are made.)