Where are you going to turn?

On my way home from school today I was following behind a car that refused to use it's turn signals.  Not using your turn signals is my biggest pet peeve.  It is so easy to use, requires very little physical strength, and it helps other drivers immensely, yet some people fail to realize this and they go about their way confusing drivers in their paths.  This especially annoys me at stop signs.  Some of the time I assume the person driving on the other side is going straight because they do not utilize their turn signals so I continue driving straight only to get honked at, in my opinion because of the other person's incompetence.  It is also very annoying if someone is switching lanes in the highway and they don't signal.  Many a time these un-signaled lane changes cause me to hit the brakes and react on a whim rather than be prepared for their lane change.  This is why one of my favorite scenes is the scene in Shoot 'em Up when Clive Owen owns someone who doesn't use their turn signal.  On a somewhat unrelated not it is also annoying when people in the left lane are going slow.  The left lane is the fast lane, and if you cannot keep up with it's speed the get in the right lane with the people going the speed limit.  On my way to pick my dad up from O'Hare a couple weeks ago I was driving along Willow near Pfigsten and the speed limit was 40 mph and there were two lanes of traffic.  I was in the left lane and the driver ahead of me was going about 42 mph as was the guy directly to his right, leaving me boxed behind these two slow drivers.  I gave him a friendly honk or two to get his attention to either pick up the pace or change lanes.  The driver refused to do either so I began laying on the horn to get my point across.  Finally I began cruising on the 2-94 and no longer had to worry about slow drivers.