The Beatles' "I'm Looking Through You" is used in the movie, one of the very few occasions where the original version of a Beatles song has been used in a film.
Dr. Bertram Pincus is named after the inventor of dental veneers, Dr. Charles Pincus.
The second mummy mentioned in the speech on Egyptology was referred to "mummy 1999.1.4". This is the official designation for the mummy of Rameses I.
After the end credits, in the darkness of last black frames, there is a short audio sample of Ricky Gervais's laugh.
Gwen's Egypt exhibition is called "Voices of the Dead" - which is exactly what Dr. Pincus experiences in the film.