Continuity mistake: When Donovan arrives at home he parks his Jaguar behind Ollie's van, but when he takes pictures of his wife and Ollie before they drive away, the Jaguar is parked more or less parallel at a distance to the van. (00:01:35 - 00:05:20)
Continuity mistake: During the Gutman trial, Massey has a binder of documents on his table. In the wide shots, this binder is very close to his pad of paper; in the close ups it is not. (00:12:10)
Continuity mistake: When Rex Rexroth is being chased by the dogs he jumps into his car. One of the dogs jumps up against his side window, leaving spit all over the window. The amount of spit changes between shots. (00:18:25)
Continuity mistake: During the meeting Marylin and Rex at which Massey is first introduced to her, there are three pencils on the table. In some shots they are touching, in other they are separated. (00:23:35)
Continuity mistake: When Miles meets Marylin for the first time her pendant keeps changing back and forth between hanging straight or to the side. (00:23:45)
Continuity mistake: In the scene with Catherine Zeta Jones and George Clooney in the restaurant near the beginning of the film, we see CZT hold the glass by the stem but in the shot of her from behind the glass is held around the bowl. (00:27:05)
Continuity mistake: When Miles and Marylin are having dinner the second time, in one of the shots she is putting down her glass. In the next shot she is putting it down again. (00:27:10)
Continuity mistake: In the scene with Catherine Zeta Jones and George Clooney in the restaurant near the beginning of the film, we see numerous shots of CZJ alternating across the table with GC and her hair is different in all of them. (00:27:30)
Continuity mistake: When Miles and Wrigley eat at the diner with the ugly waitress Wrigley stuffs his napkin into his collar twice. (00:29:45)
Continuity mistake: When Marilyn and Howard come to see Miles her hair changes back and forth between hanging straight and tucked behind her ear. (00:48:25)
Continuity mistake: When Miles and Marylin are having dinner the first time you see Marylin having a sip from her glass of water. When it cuts you see her putting the glass back on the table. She could not have moved that quickly. (01:00:50)
Continuity mistake: When Marylin and Miles decide not to have dinner at Las Vegas we see them going up in the elevator. Here Marylin's parting has moved from the middle to the side, and the fold in Miles' tie knot has gone. (01:02:30)
Continuity mistake: When George Clooney delivers his speech, his hair alternates between shots. In some shots he has a lock of hair carefully placed in the middle of his forehead while in others it is gone. (01:09:35)
Continuity mistake: As soon as George Clooney tears up his speech, we see it scattered on the podium. As he leaves the podium, we see his torn up speech placed neatly to one side, but the pieces are quarter-sized, despite only tearing them once. He walks down the aisle, then in the next shot from the podium watching him walk away, the papers are scattered again. (01:12:45)
Continuity mistake: When Rex suffers the heart attack he falls on the bed with his right hand close to his crotch. When the camera angle changes his right arm is stretched out. (01:20:20)
Continuity mistake: When Miles and Wrigley break into Miles house at some point they spray pepper spray into each others' faces and seem to suffer a lot. However, seconds later, when Miles talks to Wheezy Joe, his eyes aren't even reddish. (01:25:40)
Continuity mistake: After Miles makes his keynote speech, he goes down the aisle and eventually Wrigley embraces him. W. is holding a program in his hand while hugging Miles. At first it is rolled up, then it is folded over, then it is rolled up again. At no time did he change it.
Continuity mistake: During the Gutman trial the flag behind the witness stand keeps changing (either showing part of an inscription or not).