Anthony Braxton, the gamer they recruit to help them catch the bad guy, was named after a famous free jazz saxophonist and composer.
There is an hourglass in Charlie's office that you see in other episodes. It is the same every time. The sand does not move and they don't flip it.
The first victim in the opening scene, and the scene where Amita, Charlie, and agent Colby go to the dam are somewhat reminiscent of geocaching, an activity where people using portable GPS to find hidden trinkets; but in geocaching, there is no online gameplay involved. See the article on Wikipedia for more details on Geocaching.
Amita Ramanujan's (Navi Rawat) driver license information is as follows: DL number I5491649, she lives at 2901 West Dorchester in Los Angeles, California 90006, she is 5'8" (173Cm) and weighs 135 pounds (61Kg), and her license expires June 10, 2010, making her birthday anniversary June 10.
The coordinates for the dam where Colby Granger (Dylan Bruno), Amita Ramanujan (Navi Rawat), and Charlie Eppes (David Krumholtz) go are are N34.1114° W118.2902°