Audio/visual unsynchronized: After the operation on Gus's leg, the group is playing cards. The sound is the same audio from the card game earlier in the film. Ritt stays. Kovac takes three cards. You can see when Kovac supposedly says, "Three cards," his lips don't move at all.
Continuity: When Gus is chugging brandy, the amount in the bottle remains the same and does not go down.
Revealing mistakes: When Talulah offers to use her diamond bracelet as a fishing lure, the fish that swallows it is a carp, a fresh water fish, which would be unlikely to strike at a flashy lure anyway since it is a toothless herbivore.
Revealing mistakes: The fish that is seen underwater going after Connie's gem bait is obviously being pulled to it by a line attached to its mouth, and never opens its mouth to take the object when it makes its "strike".