Visible crew/equipment: Anita Ekberg's character and Marcello are at the top of the church tower leaning on balcony railing while looking over the city. You can easily see the "wire" attached to Anita's hat that forecasts the moment where her hat blows off her head. (00:33:15)
Character mistake: When Dean Martin desribes his writer's block to Judy Holiday, she says that she keeps sharpening his Ticonderoga pencil until there's nothing left but the "Ti," but in fact what would be left on a little nib is the "ga."
Suggested correction: She said she would sharpen her pencil... to the "t."
You should watch the whole scene. She said she would sharpen it to the Ticondero, and then to the Ticond, and she keeps going until the "Ti" and "T" (where she pronounces the sound rather than the letter).
Continuity mistake: In the bar scene, near the beginning of the film, the pint glass that Albert Finney holds, constantly changes position. (00:06:05)
Continuity mistake: Watch for the varying hairstyle of Mrs Brady in the scene in which Rachel comes to complain to her that her husband is a fake.
Revealing mistake: Midway through when Ian Carmichael and his girlfriend are dining at a restaurant with Terry Thomas, they are talking and looking at the menu. The table is laid with cutlery and wine glasses - ready to eat. During their conversation there is a shot of Ian Carmichael only talking and smoking but there is no cutlery and the wine glasses have been replaced by a brandy snifter, obviously after the meal. The next shot shows the whole table with the correct pre-meal setting. When they have finished the meal, the table setting is as it was in the earlier shot.
Continuity mistake: As the cabin boy is cutting him loose, David Balfour's bruised cheek and black eye switch from the left side of his face to the right when one shot is reversed. (00:28:00)
Continuity mistake: When Daffy enters Bugs' living room wearing a rabbit costume, you can see the door is plain green. But when Elmer Fudd enters to confront Daffy, the door is now divided into three sections.
Factual error: In the scene where Elizabeth Taylor is driving from New York City to Boston to start a new life, she drives over the Tappan Zee Bridge, from the Westchester County side toward the Rockland County side (heading east to west, you can tell from the location of the toll booths and from the way the bridge looks.) If she had left NYC by the Lincoln Tunnel, she would have had to cross the bridge going west to east. If she had left NYC via the Bronx, by far the more direct route, she shouldn't have gone over the TZ Bridge at all.
Continuity mistake: When the boy slides down the banister, money falls to the ground and the boy doesn't see it. In the next shot, as the boy is walking away, behind him the money is lying differently than when it landed. Later, when the boy finds the money, it is again in a different position.
Audio problem: When Merritt is arguing with her professor, she says, "We're supposed to be intelligent" but her lips are actually saying "Don't be afraid; my opinion is yes." This is the exact same shot used a moment later when she actually says this line. (00:07:10)
Continuity mistake: When Sylvester lands on the ground after using Tweety's feathers to help him, he drops the feathers on the ground. But when Tweety lands on him in the next shot, the feathers are nowhere to be seen.
Continuity mistake: When Bugs leaves his rabbit hole to join Wile E. Coyote at his picnic, you can see there is a jar of mustard near the end of the edge of the blanket. But when we see a full view of the blanket in the next shot, the jar has disappeared.
Continuity mistake: When Bugs reaches the top of the stairs in Bedlam Manor, Yosemite Sam (dressed in a suit of armour) tries to chop off Bugs' head with an axe, but Bugs ducks and Sam falls down the stairs. When we see Sam falling down the stairs in the next shot, Bugs has disappeared.
Continuity mistake: When Yosemite Sam sends out robot ZX29B to capture Bugs Bunny, the robot hides by some dustbins by the dump and you can see there are two dustbins by him. When Bugs empties his rubbish into the robot, the two dustbins have disappeared, and when robot ZX29B coughs up the rubbish in the next shot, they are back again.
Factual error: When the two scholars are in the carriage, they mention being 6-7 versts from Mirgorod, and that means that they will be probably late for the inauguration but still able to make it to the conference "in the evening", in Moscow. That is, if they don't waste time dining at the inn. A little rest seems the last of their problems: while Mirgorod (Myrhorod) is certainly closer to Moscow than Moldova, mentioned before, it's still nearly 900 kms, over 850 'versts' if you will! That's a trip they would make in a week, being optimistic, surely not in a day or overnight.
Revealing mistake: Louis de Funès tries to squash a bug that was alive, well and moving in close-up, but is obviously fake and still in the next shot, in a different spot from the close-up too. (00:03:30)
Visible crew/equipment: Just before the doctor tells Jordana that Ari is at Yad El, he shakes the hands of a couple kids passing by him whilst walking up a small flight of steps. When he does so, the shadow of the camera can be seen on his coat. (01:59:00)