Ozymandias - S5-E14
Trivia: Holly says to Walter "mama" after he changes her diaper. This scene wasn't scripted but Bryan Cranston kept going, realizing it was gold.
The Arrival - S1-E4
Trivia: Michael Cerveris makes his first significant appearance in this episode as The Observer/Bald Man. However if you watch the series from the beginning, he makes fleeting appearances in every episode, sometimes on a tv screen.
Trivia: When Alex goes into the Blitz Club, she hands her coat to the cloakroom attendant, saying, "Thank you, George". This is a sly reference to the singer Boy George, who, before becoming famous just one year later, really was the cloakroom attendant at the Blitz Club.
Trivia: Someone on Leverage's writing staff is a Dr. Who fan. When the team is on the escalator at the airport, Hardison asks Nate over the ear piece, "What IDs have you got on you?" Nate replies, "Let's see, we've got Peter Davison, Sylvester McCoy, and I have a Tom Baker." Sophie chirps, "Oh! I have a Baker as well!" Nate and Sophie then board the plane as Mr. and Mrs. Tom Baker. This was the first of what would become a running gag: the Tom Baker alias and several other Who references recur throughout the series. (00:12:00)
Trivia: Cameron meets a prototype robot that smiles and waves at her in in the exhibition outside the chess tournament. Briefly visible on its control screen, alongside basic commands, is the word "BladeRunner", a reference to the classic sci-fi film which also features a dystopian future populated by humanoid robots.
Clone Cadets - S3-E1
Trivia: Commander Colt watches Domino Squad do their test and says, "Start The Citadel challenge, version THX, variable 1138," which is a reference to THX 1138, another film by George Lucas.
Trivia: The lakeside cabin Jane bought was shot on location at Disney's Golden Oak Ranch. It is called 'Cabin by the Lake'. Http://www.lamag.com/citythinkblog/scene-golden-oak-ranch-mentalist/.
Trivia: They used real wolves (no CGI) to play opposite Bill Compton in the last scene of this episode.
Trivia: Eli tells Jordan that when they met Jordan was into a lot of money to Credit Dauphine. Jordan is played by Victor Garber and Credit Dauphine was the front for his SD 6 job in Alias.