my favorite was an EMT that brought a patient to the ER while I was on a rotation down there who said the patient had an enlarged liver and was very sick because of this...patient had gastroenteritis, EMT had no clue what he was doing when he tried to palpate the borders of the liver. I'm all for proper abdominal exams if you've been trained to perform one.
The other statement we love hearing is absent bowel sounds...inorder to classify a patient as having absent bowel sounds you have to listen in all four quadrants for at least 5-8 minutes or so in each quadrant.
The biggest thing that people should take from an abdominal exam is that 1) if it hurts, don't push any more, 2) use it in conjunction with the rest of your exam. I always have epigastric pain on palpation... doesn't mean a thing on me. 3) Use your critical thinking skills.