The cast and relevant crew members had to sign waivers that they wouldn't reveal exactly how the magic trick was done. The trick revealed on the show is slightly different from the actual trick.
Jimmy Pop, lead singer of Bloodhound Gang, makes a very brief, uncredited appearance in Union Station.
The MATH in this episode included: Flock behavior, steganography and matrices - error correction code.
Don says he lost an agent, McKnight, ten months ago, meaning there are approximately ten months between this episode and episode 1x2, "Uncertainty Principle."
Colby's license plate on his black Ford is: (California) 2GEE645.