Peter MacNicol can be seen wearing wedding ring in the scene where they shoot the gun in the bedroom. Larry isn't married.
The MATH in this episode included:
Biomathematics – DNA Sequence Alignment.
738,000 LAW ENFORCEMENT OFFICERS
54,000 DOMESTIC DISPUTES
Don: It's hard! You come home and someone says "How was your day?"... You're like "Well, I saw a decapitaded kid, how was yours?".
Don: Charlie, look. If I'm gonna rule her death a homicide, I need more than skating metaphors.
Megan: You knew her, didn't you?
(silence from Don)
Megan: It does say "behaviorist" on my job description.
Don: Yes, I knew her.
(AUSA Robin Brooks opens her front door)
Robin: Agent Eppes.
Robin: Well, this is a surprise.
(Don walks in and Robin closes the door behind them as the screen fades)
International Episode Titles:
Czech Republic: Pistole a růže (Guns and Roses)
Czech Republic: June 16, 2009 on TV Nova
Slovakia: December 1, 2009 on JOJ
Bill Nye was orginally supposed to guest star in this episode and shoot the gun in the bedroom scene, but he was unable to appear because of a speaking appearence.
This episode is rated: TV14-V.
The song in the opening sequence was "Spring to Kingdom Come" by Flunk.
The song during the make-out scene was "Unspoken Love" by The Electric Farm.
Dylan Bruno did not appear in this episode.
Larry: (When speaking about cookie-cutter houses, made from the same pattern but all with little personal differences between them, and comparing these houses to distinctive DNA traits of people.) It's like some Bizarro DNA world.
This is a reference to one of the villians in the Superman comic world. Bizarro is able to imitate anyone and their abilities almost completely, even Superman, but there are little differences between them.
Episode Title: Guns and Roses
Guns N' Roses is a heavy metal rock group famous for the songs "Sweet Child O' Mine" & "Welcome to the Jungle."