As Hodgins is preparing to tell his 4 "best friends" that he and Angela are going to have a baby, Sweets does a shot and then in the next shot, his shot glass is full again. As well as full shot glasses are hiding behind the candle and then appear in front of Sweets during the entire scene. But, there's no way his empty shot glass would be full again in the middle of Hodgins' speech.
Vincent Nigel-Murray says as a 'fun fact' that Milton Hershey the chocolate-maker was a Quaker, but in fact he was a Mennonite. Cadbury chocolate in England, however, was founded by John Cadbury, a Quaker.
When Vincent Nigel-Murray states that the solidifying of chocolate is an endothermic reaction, he is incorrect. When chocolate solidifies it loses heat to its surrounding environment making it an exothermic reaction.
In the beginning while viewing the remains, Dr. Brennan states the victim experienced early stages of "Spondylosis" indicating she was in her late 20's. The correct term is "Spondylitis" referring to Ankylosing Spondylitis of the lower back. This is corrected in the closed captions.
At the beginning, the intact chocolate bar was 5 sections by 3 sections. Then it was cut, revealing an empty space in the middle where the body was. When the chocolate bar is next seen in the lab, it is intact and 5 sections by 3 sections again.
Nigel-Murray says that chocolate trees are part of a family called Theobroma, which is latin for Food of the Gods. Theobroma derives from Greek. (In Latin it would be Cibus Deorum).
When Bones and Booth are talking in the diner and Bones begins speaking German, she says "Ich liebe Bayern, und Sie?" (I love Bavaria, and you?) which is the formal tense, but, given their close personal relationship, is inappropriate. She should have said "Ich liebe Bayern, und du?"