Once Upon a Time in Mexico (2003) - 43 mistakes

Continuity: In the beginning when Sands and Belini are talking and Belini says "That's when i first heard about him. He was a legend", we can see Sands glass with tequila is full. When it cuts the glass is empty with no time for him drinking it.

Continuity: In the beginning when El Mariachi is playing his guitar we can see him playing with a pick. But in one of the shots he is playing with his fingers.

Continuity: When Belini is telling Sands about Carolina, as he says "The most drop dead gorgeous woman you'll ever see", we go back to the bar where you can see the bartender push the counter back on the floor. At that time you can see all the bottles on the left side of the counter. Two shots later all the bottles has moved to the right side of the counter.

Continuity: In the scene where Bellini tells Sands El's story the food on Sands' plate disappears when he says that he couldn't find a briefcase small enough for $10,000.

Continuity: When we see the guitar maker walking through the village playing the guitar which he is going to give El, he is first playing left-handed, then right-handed. From the loose ends of the strap one can tell that the shot is not flipped.

Continuity: When Billy says "I present to you, senior Blascoe" to Barillo while he is playing the piano, you can see a guard in the background pointing his gun to the left. When it cuts the gun is pointing to the right.

Continuity: In the escape scene Carolina puts her leg over the windowsill. When the camera angle changes the foot is back up.

Continuity: Carolina climbs on the bus with high heels, but when she and El run across the roof she wears flat shoes. As she jumps you can see she has nothing on her feet. There was not enough time for her to take them off.

Continuity: After Sands shoots Ajedrez, his gun change pointing angle between the shots.

Continuity: When Sands buys chewing gum for the boy, we read the mark 'Canel's' on the box. One shot later, the shot is reversed and we can see 's'lenaC'. The box reverts to normal on the next shot.

Visible crew/equipment: At the bullfight a crew member is reflected in Sands' sunglasses in several shots.

Continuity: The chain with which El and Carolina are linked together gets cut open with a welding torch. When the chain falls down on the ground it's intact again.

Factual error: In the flashback scene when El Mariachi and Carolina are getting married, the chain is cut with a process called MIG (Metal Inert Gas) welding. This is a welding, NOT, a cutting process. While it can be done, the heat generated would have burned both wrists.

Continuity: Before Sands kills Bellini, when he says that he wouldn't think twice about ripping the patch from his eye hole and skull-f***ing him to death he is holding his cigarette up in the air. When the camera angle changes the arm is down on the table.

Revealing: When Sands shoots the waitress she dies without receiving a visible injury.

Continuity: Shortly before Sands kills the waitress she brings a pot of coffee which disappears at the end of the scene.

Continuity: After Depp kills Cheech he loads him into the trunk of the Studebaker. You see him driving with a beautiful sunset in the background but when he is searching the body and putting it in the water it is daylight again.

Revealing: When Sands throws a rock at Bellini after pushing him in the water, the rock hits his chest and abs. You can see the body is fake because as the rock hits, the arms along with the chest and head are lifted up off the water far too quickly, as if it was filled with air. Much like if you threw a rock into a life raft.

Factual error: When Sands throws Bellini's body into the water it floats like on the Dead Sea, as if it's made out of cardboard - barely submerged at all.

Continuity: When Billy and Jorge are talking in the church and Jorge says "Can you get him close to Barillo" about Billy's dog, you see Billy holding on to his dog with both hands. When it cuts you see his arm suddenly back resting on the back of the bench.