How many intentional mistakes did you spot? (SPOILERS)
Here is a list of the ones I spotted. Please add any that I missed.
1. In the opening scene, when Will Ferrell goes to pick up the live brown calf, it suddenly becomes a fake black one. Also, it is heard bleating like a sheep!
2. When Will Ferrell and his friends are watching Onza kill someone from up in the hills, you can see the forest background is painted on a board.
3. When the maid hands a drink to Raul you can see that it is a man's arm.
4. In the same scene, Sonia is wearing a white flower in her hair but when she joins Raul, it has become a red flower. Also her dress has turned from a twin strap to a single strap.
5. When Sonia and Will Ferrell are riding, you can see the horses are fake. When they spur their horses to speed up you can tell they are actually being slowly pulled along.
6. The background at the lake where his mother died is also a painted background.
7. There is an intentional bad edit when Will Ferrell rides away from the burning car. One second he is there and the next frame he totally vanishes!
8. In the next scene, when the 3 friends are in the car, you can see the background is just a projected film and the car is actually not moving at all.
9. The scene of the car arriving at the bar is just a model of the street along with a load of toy cars!
10. When Will Ferrell and his two friends are singing and playing their instruments by the fire, one of them is holding a really large guitar and he isn't even making the effort to look like he's playing it at all.
11. The white lion is so obviously a puppet.
12. When the three friends ride again in the car, the same projected background is used. You can see the same truck past them.
13. In the family dining table scene, when Will Ferrell gets up to leave, he initially goes towards the door but then realises that it isn't a real door so he turns to exit to the right.
14. At Sonia's wedding, the drummer in the band doesn't even touch the drums with his sticks.
15. After the gun fight at the wedding, one guest is seen calmly smoking on his seat as all the other guests lay dead around him. The white rose seems to be dripping too much blood for it to have been splattered in that same scene.
16. Another bad edit when Will Ferrell is told about his father's shooting. His friend on horseback jumps from the left immediately to the right.
17. His father is seen taking his last breath and dies. As Will Ferrell cries, you can see his father's chest still moving up and down.
18. In the scene with the close up of the American official with the sunglasses, you can see the camera crew reflected in his lens.
19. In the love-making scene, at first they use a fat body double for Sonia and then a mannequin.
20. When the white lion saves Will Ferrell from the coyote, you can see the body being dragged away is a dummy.
21. When Onza is speaking to the corrupt policeman, he actually hangs up the phone while the policeman continues talking, then he is seen with the receiver in his hand continuing the conversation.
22. The amount of bullet shells landing on the floor as Raul and his gang fire their guns in the air is way too much for the amount fired.
23. In the gunfight at Onza's place, Raul is first seen with a gold gun in his left hand and a silver gun in his right. In the next scene, the guns have switched.
24. When Will Ferrell shoots someone inside Onza's place, there is a delay before the stunt body drops.
25. As Sonia is pushed off the balcony, we see the stunt body drop to the ground and then we see Will Ferrell carrying Sonia without an actual shot of him catching her.
26. Raul's dead body is seen floating in clear water, then as we pan out, there suddenly appears a mass of blood around his body.