In the pilot, the real Walter O'Brien can be seen in the background of the scene when Walter hacks the cameras in the airport control tower.
Several of the claims about the real Walter O'Brien (his IQ score, his background, his previous and current assignments) have been contested by online communities, including a Reddit AMA.
When Sylvester Dodd gives the nun his paycheck for something "fun and safe" at the end of Scorpion: Single Point of Failure (2014), the address on the check is 909 Aculeus Street, Los Angeles CA 90013. In astronomy, Aculeus (NGC 6405, also known as the "Butterfly Cluster") is an open cluster of stars in the constellation Scorpius. There is no Aculeus Street in Los Angeles.
The fictional diner often referenced in Scorpion "Kovelsky's" is actually named after Eddie Kaye Thomas who's real last name is Kovelsky.
Eddie Kaye Thomas previously worked with Robert Patrick in TV Series "The X-Files".
The logo for Scorpion is the Golden Ratio. A smaller sample of it is clearly seen in the stinger.
In several episodes the characters often use the phrase "the greater good." Elyes Gabel also appeared in the film Spooks: The Greater Good.
Sylvester was originally intended to be an African-American in his thirties. Ari Stidham was cast in the role after only one audition.
Ari Stidham (Sylvester Dodd) was born in the community of Westlake Village, California. Westlake was used as a filming location for the 1999 movie 'American Pie', which starred Eddie Kaye Thomas (Toby Curtis) playing the character of Paul Finch.