At around 22:37 after the first Hulk out he sits down after getting tired you can see he's wear green shoes on his feet.
Around the 44min mark you see the 'Hulk' rescue 'Dr. Hill. from the operating table and carry her down the corridor, when you get the full view of the 'Hulk' you can clearly see he's wearing green slip on shoes to protect his feet, from all the stories in the comics, Hulk never needs footwear as his skin is virtually Indestructible.
When Dr. Hill calls the police, she tells them that she is a doctor at the Valley View Sanitarium, instead of the Valley View Sanatorium.
After the Hulk knocks down the gate at the entrance to the Sanatorium, the camera view from one angle shows a wet driveway, while, from the opposite angle, the driveway is dry.
While David is the the prep room he is able to see a monitor which shows the operating room. The monitor should not be able to zoom in or change angles. After he Hulks out he throws a chair at the TV that not only is switched off the wall colors are different and you can see some kind of furniture next to it in the close up at around 42:50 and none from afar.