The dog is a female throughout until the attack scene at the end. When the dog jumps up onto Rick's wife's bedroom door, you can clearly see the dog is male.
During lunch with Schwarz, Dalton's drink changes from a mixed drink, to water, to a glass of wine.
When the dog attacks Tex it bites him in the right wrist, indicating that it either severely injures it or - at the very least - bites of the shirt around his wrist. When Tex later attacks Cliff with the knife in his right hand we see that his wrist and shirt are perfectly intact.
Rick's hair is mussed up in the make-up trailer and seconds later perfectly combed back in the same shot.
When family member "Sadie" Atkinson falls in the pool, towards the end of the home invasion/fight scene, you see blood pour out of her into the pool, but when Rick gets the flame thrower and comes back there is no blood in the pool.
During his fight with Cliff, Bruce Lee is depicted with the longer hairstyle he sported in the early 70's and not the short haircut he had during his time on The Green Hornet (1966).
The side view shots of the 747 in 1969, the time frame of the movie are actually of a 747-400 which didn't have its first flight until April 29, 1988. The difference can be seen in the longer bulge of its upper cabin. The original 747 was much shorter.
Smoking a cigarette dipped in LSD would not have a psychedelic effect. However, the filter of the cigarette would have easily absorbed a very potent dose of blotter acid which would provide the intended effect as soon as Cliff placed it in his mouth.
When Cliff throws Bruce into the Lincoln's door, the crumpling of both the doors in that location is ridiculous. That amount of damage would not have occurred anywhere on the car let alone where the two doors meet. In real life only one of the doors would have been barely dented if that. 60's cars, especially Lincolns, used far thicker metal than is used today.
The ambulance attendant gets in the front seat with the driver. He would be required to ride in back and look after the patient.
Cliff is given a cigarette said to have been dipped/laced in acid (LSD), but smoking anything dipped in LSD would not work because when lit on fire the fire would destroy the LSD. LSD can not be smoked, it only works when eaten/or when liquid LSD is dropped in the mouth, or very very powerful LSD can sometimes be absorbed through the skin. PCP and embalming fluid are the drugs that work when dipped, dried, and then smoked. People would dip/lace a cigarette in PCP or embalming fluid and then sell them on the street. The LSD-dipped cigarettes were sold on the street (in broad daylight) by hippies looking to make a buck (or in this case, 50 cents). They couldn't care less whether they actually worked. The cigarettes could have been dipped in anything; saying it was LSD as a new way to get high was a sales trick. They just wanted the money. Whilst it is true that a cigarette dipped in LSD would not do anything, the cigarette does seem to get Cliff stoned. It could however have been dipped in PCP or other substances which could be inhaled when smoked, and the hippy girl was just calling it LSD because that was the fashionable drug at that time.
A bus drives past showing an ad for the show Combat! (1962). That show went off the air in 1967. This incident is probably not a goof. The ad also said it was being shown back to back on Channel 11. At that time, Channel 11 was an independent station and their schedule was filled with reruns, of which Combat! (1962) may well have been one.
Quentin Tarantino is known for adding deliberate continuity errors into his movies. There are several examples in this one but the most obvious is as James Stacy comes over to talk to Rick on set. Initially he is bare-headed and his cowboy hat hangs down his back. There is a sudden edit jump and now the hat is on his head.
You can see a Tora! Tora! Tora! (1970) poster in the background at the studio. In fact, filming began in December 1968, and posters for films currently in production are common on studio lots.
George Spahn's house was not on top of a small hill, but behind the western set. The hill idea was intentional.
When Cliff is driving the Caddie, just before he sees Pussycat for the third time and picks her up, the speedometer on the car can clearly be seen at zero despite the fact he's driving down the road, revealing the process shot.
As Cliff is approaching Rick's driveway to repair his antenna, the actual real life address for the property that was used for the Tate house is visible on the face of the sidewalk. The address is 19074 Alta View Dr, Studio City, CA.
As Cliff is driving Rick through the streets of LA, in the background you can see green lights indicating the street was closed for the shot as otherwise, Cliff was just driving through red light after red light after red light.
When Cliff is fighting Bruce Lee, he throws him against a blue car, damaging the doors on that side. Just before the impact the rear door is already visibly partially crumpled, revealing the skin of the doors to be a soft malleable material that gets pulled back into the damaged shape when the actor hits.
At about 1h21min you can see Cliff driving around, but the speedometer is visible an clearly shows 0 mp/h.
The term "bounty killer" is taken directly from Sergio Leone spaghetti westerns as a nod to Italian audiences who would not understand the term"bounty hunter". TV censors of the day would not have approved as a series lead who is specifically identified as a killer. I may also be noted that, with the exception of a few random and familiar terms such as "loco", "muchacho" and the like, full sentences of Spanish dialogue would not have appeared in a western TV shows of the day. This is not due to bias but to the fact that much of the American audience wouldn't have understood it. In those days, Spanish was not the default second language taught in American schools. Other options were French and German (holdovers from previous generations).
The TV antenna is a modern style unit with new type cable used for digital reception.
In the scene with posters of the (fake) Italian movie "Uccidimi subito Ringo disse il Gringo", the movie title is mispelled: "UccidiM suGito", which does not mean anything in Italian language.
When DiCaprio uses the ice tray he reveals that he was not familiar with the aluminum ice cube trays of the 1960s. As everyone of the day was very aware, the ice sticks to the metal blades, making it very hard to open. If you pull too hard, the handle could break off. The standard practice was to run it under the tap for a few seconds, pour off the water, and then open it. In 1960, anyone over the age of ten would know this. (In 1969 Quinten Tarantino was only six.)
No cameras are seen in the opening interview, although they're front-facing both Rick/Cliff and the interviewer.
This is actually indicative of a film director versus a television director setting a scene.
When Sharon Tate was talking to the girl at the box office of the movie theater in Westwood, you can see the Starbucks sign for half the scene before it was covered up. Starbucks was founded in 1971.
When Cliff drives home on the freeway and just before taking the off-ramp there is a clearly visible numbered exit sign. California was one of the nation's last holdouts and did not use numbered exit ramps until 2002; the movie takes place in 1969.
In the movie Sharon Tate and Roman Polanski attend a party at the Playboy Mansion. Although there was a Playboy Club in LA in 1969, Hugh Hefner did not relocate the Playboy Mansion from Chicago to LA until 1971 making the couple's attendance there erroneous.
Pan Am did not introduce the Boeing 747 until January, 1970, over five months after the Tate murders.
The movie takes place in 1969 and shows the Pussycat Theatre on Hollywood Blvd., but the Pussycat Theatre did not open at that location until late 1974. It was called the New-View Theatre in 1969.
(at around 19 mins) Cliff Booth is driving off from Rick Dalton's home, in Cliff's own car, a VW Karmann Ghia -68. He drives off with the car's engine in low gear/high revs. However, the sound is not that of a typical air-cooled VW four cylinder boxer, but more that of a sports car with a conventional engine. Because for the actors' ease; the car had a 2.5 l Subaru four cylinder water cooled engine installed, with a manual valve body, reverse pattern transmission, and that's the sound recorded.
When Cliff drives Pussycat to the ranch, a mic hidden under the driver's sun visor of the Cadillac is clearly visible in some shots.
When Cliff is walking Brandy, you can see the hippie car's headlights in the reflection of the cars on the left as Cliff is walking down the road. They were waiting for Brad Pitt to hit his mark before driving up the road.
During the spaghetti spy movie sequence at 2:00:54, as the car is jumping the bridge, a six foot tall steel jump ramp can be clearly seen.
The city lights seen at night in the background from Rick's house are those of the San Fernando Valley. Such a view would not have been possible from Rick's Cielo Drive residence, next to Sharon Tate's house, up in Beverly Glen. According to IMDb, the site for filming Rick's house was 10969 Alta Vista Drive, Studio City, which overlooks the San Fernando Valley, thus explaining the erroneous (though photogenic) view.
The narrator says: "Both men know once the plane touches down in El Segundo, it'll be the end of an era for both of them", in reference to a plane landing at LAX. LAX is not located in El Segundo but in Westchester, Los Angeles, CA.
When Cliff picks up Pussycat, he says she's hitching up and down Burbank Blvd. He then gets on an on-ramp to US 101 Northbound. The 101 has no on- or off-ramps on Burbank Blvd and the ramp he uses is off Hollywood Blvd.
On The Green Hornet set, Bruce Lee talks about Cassius Clay and Sonny Liston. Cassius Clay changed his name to Muhammad Ali on March 6, 1964, 2 1/2 years before The Green Hornet aired. There is no way Bruce Lee would have referred to Muhammad Ali as Cassius Clay in late 1966.
George hits Cliff right in the arm despite being blind.