The Future in the Past - S8-E1
Visible crew/equipment: When Bones is on the platform and everyone has gone from the lab, Sweets arrives and we can see a woman walking behind him. There isn't supposed to be anyone at the Jeffersonian except them.
The Gunk in the Garage - S8-E3
Revealing mistake: Dr. Sweets gets shot by a stray bullet. However, before they fire their guns when Dr. Sweets says "they have guns" he already has the blood shot stain on his shirt. (00:39:10)
The Method in the Madness - S8-E5
Continuity mistake: At the start, Bones is putting her one glove on. Camera changes and both gloves are now on. (00:03:15)
The Method in the Madness - S8-E5
Continuity mistake: When Bones starts to explain about the Aztecs, Hodgins is holding a boot upright. Camera changes and the boot is now upside down. (00:06:40)
The Method in the Madness - S8-E5
Continuity mistake: When Sweets is staying at Booth's and Brennan's house, he comes downstairs after taking a bath and, as he turns, his shoulders are shown without the scars he has in another episode.
Continuity mistake: When Bones scans the pod you can see the skull in the pod has its jaw open. However the skull picture on the scanner has its jaw closed.
Continuity mistake: When Hodgins carries the first box of roaches to the remains, the positions of the roaches changes instantly. In one shot they are all over the side of the tank, in the next shot they are not. (00:21:30)
The Ghost in the Machine - S8-E9
Other mistake: Bones states she doesn't like to make assumptions in sex based on just the skull. However this is something she has done from the start. (00:01:10)
The Corpse on the Canopy - S8-E12
Audio problem: Early in the episode Angela is holding Michael Vincent and you can still hear him crying, but the baby isn't crying. (00:02:00)
The Twist in the Plot - S8-E13
Continuity mistake: When Bones is watching Booth make his video for Christine, in some shots she's stood up straight, in others she's leaning against the wall. (00:38:00)
Plot hole: Angela comes into the autopsy room to inform Hodgins and Cam that Brennan is awake. Cam says that Brennan said the entry wound was cold and Hodgins comes up with the ice bullet theory. But how did Cam know what Brennan said about the cold if she didn't already know Brennan was awake?
Suggested correction: Bones told Booth that the entry wound was cold when she woke up. It's only fair to assume that Booth called Cam and told her.
But then, Cam would know Brennan was awake making the whole point of Angela coming in to tell them pointless. Plus with Cam knowing Brennan is awake, why would she not tell Hodgins?
I'm rewatching and have been looking for an answer as well. I think it's just a continuity error. If Booth told Cam, she would've told Hodgins, and when Angela walks in to ask if they made any progress, Cam would also tell her. Having Angela tell both Cam and Hodgins that Booth told her, then seeing them relieved and having Cam mention Brennan saying the shot was cold makes no sense other than they wanted to keep it as a dialogue instead of a monologue. Which makes it a pure error.
The Maiden in the Mushrooms - S8-E21
Continuity mistake: When the guy finds the skull his grip changes between shots. (00:02:10)
The Party in the Pants - S8-E22
Continuity mistake: The body falls on a foreman who gets covered in blood. When she scrambles away the blood has gone. (00:03:05)
The Party in the Pants - S8-E22
Other mistake: The body falls from the excavator revealing there is no other debris in the excavator. However when the team get there they are told that the load in the bucket fell on the body, crushing the head. (00:03:15)
The Party in the Pants - S8-E22
Continuity mistake: When Sweets is talking to the victim's girlfriend, she has a strand of hair in her hand from the rear angle and nothing in her hand in the front angle. (00:15:50)
The Party in the Pants - S8-E22
Continuity mistake: At the reception for Seeley's mother's wedding during the bouquet toss, when the bouquet is in the air the stems are bound in white ribbon, when Dr. Brennan catches the bouquet the stems are loose.
The Secret in the Siege - S8-E24
Visible crew/equipment: When the camera pans to behind Pelant's desk, the camera shadow can be seen on the desk. (00:00:50)