David remembers Rhodes saying, "You and Carrie were trying to set us up." Actually, Rhodes had told David: "You and the girl were trying to set us up."
During the first scene on the side of the road between David and Carrie there is a constant change between bright sunlight and dark overcast.
When the hulk is in the hospital, after the nurse phones for security, the PA system says "... security to OB/GYN immediately...". In hospitals, they would avoid such panic inducing words to prevent visitors from panic. Typically, instead of "security" something like "code blue" or "code yellow" would be used. And instead of "immediately", "stat" would be said.
After David signs the release form for the hospital, the notary stamps her seal on the bottom of the form. It's a state of California Seal and the hospital is in Marysville, Oregon.
As the Hulk jumps down the elevator shaft, we can see that stuntman Manny Perry is playing the Hulk, and not Lou Ferrigno.
When the Hulk falls down the elevator shaft the tattered shreds of his shirt remain at the sides of his body, indicating that he wasn't actually filmed falling down at the time.
The pants David is wearing are different than the pants the Hulk is wearing, as they should be the exact same. While David is wearing fancy blue designer jeans with a gold button on the rear pocket, the Hulk is wearing basic blue Levi jeans with no gold button and different patterns to the pocket. As is, when David transforms, the pants don't change, just stretch.