Trivia: Throughout the show, the number 47 appears many times. There are multiple room 47's (where Syd found the Circumference in season 1 and the room in her memories from season 3, among others.), there are 47 Rambaldi artifacts, and Page 47 of the Rambaldi manuscript was the page that had Sydney's picture on it. Also the pagers flash 47911 when they get called into the office.
Trivia: Jack Bristow's full name is Jonathan Donahue Bristow.
Trivia: The 2 children who say "Bad Robot." in the Bad Robot logo are the children of the show's executive producer, J.J Abrams.
Trivia: During the title sequence, the creator J.J. Abrams' home movies are playing behind the Alias logo. The home movies are from a 4th July picnic.
Trivia: The initials "SD" of SD-6 stand for Section Disparue, which means "the section that doesn't exist."
Trivia: During the beginning credits, while 'ALIAS' is being spelled out, look closely. Shortly after the S appears the Rambaldi sign <0> flashes for one frame.