When Bernard hands Vivian the phone for an emergency call from Tommy, the phone is in the right direction. When Vivian receives it, however, the phone is upside down and Vivian begins talking into it without flipping it around.
When Tommy's wife is leaving him, Bernard shows him a picture of the universe. He looks over to the left side of the picture when pointing out "our galaxy." However, in Tommy's next line, he points to the right side of the picture and says, "There's us over here."
When Brad is speaking with Bernard and Vivian in his office (near the end of the film), the football changes position after he sets it down on his desk - in one shot you see the strings and in the next, you don't.
When Bernard and Vivian are in Brad and Dawn's Kitchen, Brad says, "This is not why I hired you." and has his arms crossed. In the next shot, a wide shot of the two couples, Brad has one hand in his pocket and the other by his side.
When Catherine is in Albert's parent's apartment, she's seen holding Albert's childhood journal. On the page that is open, it appears that the first words of the first sentence are "I went...". Yet, when Catherine asks Albert's mother to read the entry, she reads "I came home..." first.
In the Huckabees' headquarters, when Brad interrupts Albert's poem-reading, Tommy yells and points with his left hand in the wide shot. Cutting to a closer shot of Tommy and Albert, he is pointing with his right hand.
When Brad and Albert enter the elevator near the end of the film, Brad's shirt is completely soaked down to his elbows. After the elevator doors close and a brief discussion between Brad and Albert, Brad's shirt is completely dry up to his shoulders.
In the flashback scene where Brad and Albert are talking in the restaurant Brad tells him his girlfriend liked Albert's "poem about the rock". This is impossible because Albert first read that poem after saving a piece of the marsh at the beginning of the movie so at the time of the restaurant conversation, the poem had not yet been written.
Most cars in the movie have obvious "prop" license plates (with blue and white shading, and no State name, as if to obscure the intended setting.) However, numerous cars are seen to have California plates - often cars not under the control of the production team, for example, driving by on the roads. In one scene in the parking lot, all of the cars in the "background" have California plates, all of the cars in the "foreground" have prop plates.