Walter White's vehicle is a Pontiac Aztek with a very faded factory paint job.
The actor who portrays Walter Jr. in the series (RJ Mitte), actually has cerebral palsy like his character on the show.
Walter wears a green shirt in every episode, and most of the scenes he's in.
The title of the series is spelled using the chemical symbols for bromine, Br, and barium, Ba. Chemical symbols from the periodic table of the elements also appear in the opening credits. A letter or letters in someone's name appears capitalized and in a different color.
Just like Walter wears something green in every episode, Jesse wears something with red in it every episode.
When characters on the show are smoking meth, they are actually smoking sugar or rock candy but do not inhale.
All of the phone numbers referenced throughout the show use a real ABQ area code (505) - the fictional 555 is never referenced, unlike in most films and TV programmes.
Both Bryan Cranston (Walter) and 'Anna Gunn' (Skyler) have guest starred in "Seinfeld" (1990). Anna played Jerry's girlfriend in "The Glasses" (Season 5) and Bryan made his first appearance as Dr. Tim Whatley a year later, in Season 6.