When the Sentinel is finished being loaded with cocaine from the plane, you can see that the CCTV periscope has already been smashed on the sub. This doesn't happen for another minute or so after Bond begins to cut through the bags.
Both Truman-Lodge and Heller greet the Asian delegation in Japanese, but the delegation members speak Chinese amongst themselves. In addition, two members of the delegation are referred to as "Kwang" and "Tan," which are surnames of Chinese origin.
When Bond is battling the pilot on the pontoon plane, he's hanging out the starboard (passenger-side) doorway. When the exterior shot shows the plane banking starboard up, the interior shot shows the ground over Bond's shoulder (should show the sky). Conversely, when the plane is banking starboard down, the sky is shown behind Bond (should show the ground).
Near the Wavekrest, Bond is on sentinel and jumps off after it reaches the surface. A small boat approaches with four men on board. Two jump into the water after Bond. In the next shot, there are still four men on the boat and two more jump into the water.
After Bond pushes the tanker against the cliff walls, Sanchez's henchmen take aim with the Stinger rocket launcher. We see a) the henchman's POV taking aim through the viewfinder - Bond's tanker in straight road with no cliffs and no second tanker in background, then b) Stinger fired, c) crashed tanker's driver reacts to Stinger launch (so evidently sees it), d) Bond getting the tanker he's driving up on one side with ramp (no background tanker nor close cliffs in sight), e) Stinger missing Bond, f) Stinger colliding and blowing up crashed tanker near cliff walls (which was nowhere in sight when POV was from Stinger launcher sights) - evidently henchmen and crashed tanker not on same line of fire.
Bond jumps from the plane to the top of the speeding tanker truck. Sanchez fires a burst of machine gun fire at him from a moving car, more than 10 feet below. As Bond stands upright, the bullets ricochet at his feet as they miss him. The bullets would have to rise and fall in a 90 degree arc to accomplish this.
When Sanchez cuts the line to the pressure chamber we see Krest's face and head swell up and explode. This was done for dramatic effect and would not happen. Krest had not been under pressure long enough to build up sufficient pressure in his body to cause any major damage. If he had been under pressure for a long time, and the pressure was suddenly released he would have suffered the "bends" but would not have exploded.
Sanchez pays Killifer his $2 million bribe in a medium-sized suitcase, describing it as "all in $20 bills". A single suitcase is much too small to hold 100,000 banknotes. In addition a $20note weighs about 1gramme so 100,000 of them would weigh 100kg (20lbs) an impractical amount to carry in one case.
When Sanchez is shooting at Bond his bullets ricochet off the tanker. The metal of the tanker is thin enough that the bullets would have penetrated rather than just bounce off without leaving even a dent.
The aircraft in the beginning of the movie controlling the airspace identifies itself as AWACS. In fact it is an E-2 Hawkeye, carrier type aircraft. AWACS are twice as large and do not have a split tail.
When Bond is breaking into Krest's laboratory, a shark comes out under the steps, knocks a platform loose, and holds its position vertically with its head above water for several seconds. Not only is the shark obviously fake, this is atypical behavior for a shark, not to mention the fact that a shark lacks the muscle balance to hold its body in a vertical position with its head above water for any period of time.
The maggots in Krest's laboratory do not move independently. You can tell there is some type of vibrating object underneath the maggots that is causing movement, as it looks very unnatural and it quite obvious.
The goof items below may give away important plot points.
After the two tankers collide and Sanchez drives away in the last tanker. In one shot just before the explosion the two drivers are in front of the flaming tanker, one passed out. Seconds later in the next shot (not enough time to get away) when the tankers explodes, both drivers have disappeared.
When the two trucks are side by side in the final action sequence, one truck is pushed by Bond into the cliff face. The driver of the truck that survives is clearly visible wearing the henchman outfit (overalls and red hat), however this truck is 'driven' by Bond. In a few frames he is seen hopping out of the crashed truck.
When Truman-Lodge is shot by Sanchez, he falls off to the side of the road, but when Bond makes his dramatic escape through the fire from Sanchez's henchmen, Truman-Lodge's body is shown lying in the road.
When Bond shoots Sharkey's killer, the spear appears to go in on the right side of the chest but when he falls into the water and Bond dives in after him the spear is on the left side near to the heart.
When killing Krest, Sanchez pressurizes the chamber to many atmospheres, then lets all air out in an instant. While a massive pressure change can indeed kill someone that way (as happened in the horrible Byford Dolphin accident) that would also create a massive pressure and sound spike *outside* the chambers with all that air escaping explosively. Sanchez and the others would be subjected to an explosion of air, rendering them deaf and possibly knocking them off their feet. Yet all we notice is some hissing.
When Bond releases the trailer to send it crashing into the other tankers, he simply reaches for the pin on the fifth wheel and pulls it. However, as any experienced trucker can attest to, trailers cannot be uncoupled from a fifth wheel unless there is no pressure on the latches inside the fifth wheel. With the trailer's axles hanging over the cliff, there would've been too much pressure applied to the latches inside the fifth wheel for Bond to be able to uncouple the trailer from the truck.
When the two tankers collide and explode in front of Sanchez' car, the driver slows down and pulls over to the right. We then cut to Truman-Lodge and Sanchez in the back of the car, but the background outside is still moving by at breakneck pace, showing they are still traveling fast and in a straight line.