Pet Peeves:
People who talk on their cell phones---in the movie theatre or in a restaurant.
People who can't talk on their cell phones and drive at the same time.
Cars with extremely loud, thumping stereo systems and their idiot owners who will be deaf in a few years.
People who litter, especially cigarette butts. Last night someone crused by my house and threw a 22 oz beer bottle at my car, and it busted right behind my rear tires. Fortunately I heard it so I didn't just roll over it the next morning, but I still had to get up early to clean it up.
Telemarketers who call way too early and wake me up the one morning I have a chance to sleep in.
People who realize they're in the wrong lane and sit there blocking traffic until someone will let them in to the right lane, totally interrupting the flow of traffic because of their selfish stupidity. Likewise, the people who run the light and then sit in the middle of the intersection, blocking the people who have been patiently waiting for the light to change.
People who never call to hire you and then call when they need something edited/recorded for free. (MY DH and I both get this. We do enough free stuff for people we like! And of course, if you do the job, the person will not remember you when they get a paying job.)
Developers and politicians with a sense of "entitlement" who make decisions solely based on what will benefit them the most.
People who drag race down my street, despite the little kids and animals who play in the street.
That's Why I Love Mankind!