Over-privileged people who think the rest of us should step aside because they have money. These are the ones who cut you off in traffic in their big expensive SUVs or cut in front of you in line at a store. Their kids are even worse...

People who come to work sick and spread around their illnesses.

People who take credit for other's work/ideas.

Dishonesty.

A sense of entitlement (my big beef w/much of the "younger" generation -- those who were indulged and told they were special).

Selfish people---the ones who lack manners and think it's all about them.