By 2006, slot machines - especially those at McCarran Airport - had gone coinless, accepting only paper money and dispensing barcoded vouchers that can either be inserted into another machine or redeemed for cash, thereby rendering the Susan B. Anthony con moot.
When Casey Affleck (Virgil Mallorca) says in Spanish "Peligroso es mi nombre medio" (dangerous is my middle name) the translation from English makes no sense in Spanish. The correct translation should be "Peligroso es mi segundo nombre" for the phrase to have an actual meaning for Spanish speaking people.
Willy Bank threatens Basher Tarr (acting as Fender Roads) that he can pick up the phone and have Shaun White and Travis Pastrana doing heel clickers and lazy boys (both are tricks done on a motorbike or dirt bike) off the back of the building. Tarr then refers to them as "long hairs riding rice rockets." While Travis Pastrana is a well known competitive motor sports athlete, Shaun White is a snowboarder and skateboarder and has never been known as a motor sports or biking competitor.
Yen refers to bowling with the 'owner of Samsung' as his connection to being able to obtain the cell phone that Willy Bank covets. Samsung is a huge publicly traded company and does not have an owner, but he could very well have meant the CEO. Or it could have been a simple mistake on his part.
Whenever the principals are at the airport, Gulfstream-class private jets await them. Gulfstream passenger cabins have distinctive oversize rounded "porthole" windows. Only such planes appear on the tarmac; however when there is a momentary in-flight clip showing the passenger's aerial view of the passing landscape below, the window is a small "sardine can" window of a typical commercial airliner. Clearly this was generic stock footage of "anyplane" flying over "anycity". When the highrollers are later disembarking, the windows become classic Gulfstream portholes again.
When Rusty and Danny leave the storeroom after the call, Rusty keeps his mobile phone in the right hand while pushing the trolley out of the room.
On the corridor the phone is gone from his right hand. If he wanted to put away his phone, he would have naturally done it before moving out.
In one part of the movie, from the air, it shows that The Bank Hotel and Casino is on the west side of Las Vegas Blvd and just south of the Excalibur Hotel. In another part, out front of The Bank after the "earthquake", it show The Bank right across the street from the Bellagio Hotel which would make it north of The Excalibur and on the east side of Las Vegas blvd.
When Yen places a bet on the roulette wheel he covers numbers 11,12 and 13, to fit in with the previous statement that the 'fixed' ball could be assumed to land on one of three numbers. 11,12 and 13 do not appear consecutively on a roulette wheel. If you wanted to cover a bet on '12' for example, you'd need to place chips on 12, 8 and 29 on an American table.
The tunnel boring machines used to make the Chunnel were huge and took months to assemble. There is no way that one could be transported on the back of a single tractor trailer and put into service in a matter of hours (days). In fact there were 11 Tunnel Boring Machines in total. Some of the machines were dismantled and removed. Some were driven steeply downwards and buried clear of the tunnel.
The Bell 430 helicopter used for the theft of the diamonds could not have lifted the diamond vault. the Bell 430 has a maximum lift capacity of around 4,000 pounds, in the movie they stated that the floor thickness was 12 inches of reinforced concrete. The display vault looked to have a diameter of 12 feet give or take a foot, reinforced concrete being 150 lb per cubic foot makes the bottom slab itself 5,652 pounds, well over the lifting capabilities of the Bell 430, not to mention the vault casing which was 2 inch thick concussion proof glass and the additional 12 foot diameter upper deck.
The Bank Hotel is a physical impossibility in design. The twisted, arced shape of all three annexes, which are shown independent of each other, would make high-speed elevators, such as the ones Yen are shown navigating between, a complete impossibility. The elevators shown are clearly in a straight shaft, which cannot exist in conjunction with the exterior design.
Reuben tells Willie Bank that he went before the City Council to have a street outside the casino changed to one way. The Strip is outside of the City and the streets are under the jurisdiction of the County Commission instead.
Livingston getting busted by the "FBI" was not planned by the crew; Livingston specifically requests this be kept secret from the rest of the crew. When he is arrested and Willy Bank decides to test his fingerprints for known associates, the crew is surprised and Basher is forced to impersonate an stuntman to distract Bank. If the bust was planned, the crew should have planned for Bank to test the fingerprints (or they should have used gloves when handling the equipment). Livingston had secretly enlisted the help of Roman Nagel (Eddie Izzard) and Agent Caldwell (Bob Einstein).
At the dice factory revolt in Mexico, Turk Malloy throws a Molotov cocktail over the fence, yet, as the scene pans around, there is already a van fully engulfed in flames and there is no sign of the broken bottle. However, it's possible that the van was already on fire before Turk threw the bottle, and that he either missed his target or the bottle hit off-screen.
The two girls go to the motorcycle jumper's trailer to "interview" him and get his clothes so that Basher can use them to distract Bank upstairs. However, the hand that hands Basher the jumpsuit is a man's hand--highly unlikely given that the original motorcycle jumper would be alone in the trailer with the two girls. However, if you look very closely it seems like the motorcycle jumper is Rusty. You can notice his eyes through the helmet.
When Livingston is giving Rusty the slot machine sequence for the jackpot win, the crew thinks he's in the back of a car handcuffed. Which is why they needed the cartwheel to hack Bank's computer and why Livingston didn't do the hack. But he's right back on the ear piece to give Rusty the sequence.
When the explosion goes off to loosen the cage with the diamonds to be lifted by the helicopter, that helicopter is flying close to the top of the roof when the smoke comes out, but the smoke is not affected in any way, instead of being blown away by the fan effect of the helicopter's rotor. Obviously we are seeing a helicopter model without rotors.
As Turk presses the top button to start the boring machine, notice the small metal plate slid through the slot on the bottom button. This is designed to keep the machine from accidentally starting on it's own. As long as that metal plate is in place, the machine cannot start.
In the scene where Terry Benedict is checking himself out in front of a mirror, Danny Ocean stands behind him and asks, "You ready?" Benedict looks into the mirror, and just before he answers, "I was born ready," he fleetingly makes eye contact with the camera.
The goof items below may give away important plot points.
Incorrectly regarded as goofs
Terry Benedict's hired thief, François Toulour the Night Fox, begins to follow Danny Ocean's crew before Ocean goes to Benedict for help. A deleted scene reveals that Benedict knew Danny's crew were there as soon as they arrived and hired Toulour to keep an eye on them.
In the airport scene at the end, Linus is holding a Southwest Airlines ticket jacket (and Southwest is highlighted earlier in the film). The gates shown are McCarran "D" gates. Southwest flies only out of the "B" and "C" gates. Also, the VUP is told that he might make "stand by" - another Southwest "familiarity". However, keep watching for another minute and you'll see Linus getting up (probably walking to another gate or not leaving at all because he'd gotten a job offer from his dad), leaving Danny and Rusty at gate D.
Part of the plan to cause a major loss to Willie Bank is the placement of a new "'Nuff Said" game on the floor of his casino on the same day as he is introduced to it. However, Nevada law explicitly states that a new table game cannot be introduced unless it either meets previous definitions of acceptable games or has been approved by the Nevada Gaming Commission. The new game would not meet either requirement.