X-Men: First Class

To prepare for his role as Charles Xavier, James McAvoy shaved his head. He soon learned that the filmmakers wanted Xavier to have a full head of hair in the prequel. Throughout the first month of filming McAvoy had to wear hair extensions. He finally shaved his head for X-Men: Apocalypse (2016).

(at around 59 mins) When Xavier and Erik were confronting Emma Frost in the Soviet Union, some might think that it would have been impossible for Erik to crack Emma's neck with the metal bed frame because diamond is one of the hardest substances known to man. Hardness does not prevent cracking. There are different types of material strengths. Diamond's hardness does not mean that it is invulnerable to all types of stress.

Part of the closing credits take place in a sequence of X-symbols, chromosomes and DNA strands (reminiscent of the opening credits to Dr. No (1962)).

Edited into 5 Second Movies: X-Men: First Class (2011)