How I Met Your Mother

The guy that wears a calculator costume says, "Clear everything" as he points to the CE button. It actually stands for "Clear Entry". The "C" (sometimes "AC") stands for (All) Clear, which clears everything.

Closed Captions: At the end of the episode when Barney tells Loretta that she was his father, closed captioning has Older Ted (Bob Saget) saying "Kids, Barney would learn the truth about his dad sooner than he ever could have guessed. But as he hugged Loretta on this, the last day he'd ever set foot in his boyhood home, he realized he had one hell of a mom." The first sentence is removed, and the second sentence is cut up and inserted not in its entirety.

On Barney's map of the world there is no check over Argentina meaning he has never had sex with a girl from there, however during "Something Blue" he says he hooked up with an Argentinian exchange student.

In this episode Robin complains about Marshall being "too nice" because he helped some people rob an apartment, mistakenly thinking he was helping them move. However, in "Murtaugh" she herself did the same thing with Barney.

In this episode, it is stated that Marshall can never take a good picture. However, in the opening sequence, Marshall is in several pictures, all of them decent. In contrast, it is stated that Barney can never take a bad picture. In the opening credits, however, we can see that he doesn't look perfect in all pictures.

When the gang sees Barney in the stadium at the Super Bowl, holding a placard with a phone number on it, it's the same shot as used in the ad for the show during the previous's night's airing of the Super Bowl. However, the number displayed during the Super Bowl ad (1-877-987-6401, which played a recording from Barney) was replaced in the episode with a non-functioning number (1-917-555-0197).

Although Ranjeet says in the first season that he is Bangladeshi, the foreign language he speaks in this episode is not Bengali.

We learn in this episode that Barney's ringtone is "Turkey in the Straw".

It is stated in this episode that Marshall and Lily have shared a toothbush for eight years. However in "Zip, Zip, Zip" in season 1, they are seen brushing their teeth together.

The clips of Barney suiting up in the bathroom at MacClaren's are out of order: it shows him putting on the jacket, then backtracks and shows him buttoning the shirt and tying the tie.

The stock footage of Ted's kids saying "What?" is from the Pilot episode, shot in a different room and with different costumes than all other stock footage of Ted's kids.

The gang uses a Tim Horton's coffee can as an ashtray about halfway through the episode, and the Tim Horton's name is clearly shown in the trademark gold oval on the front of the can. Near the end of the episode, the gang is back on the roof, and the "Tim Horton's" has been removed from the gold oval.

In the very first scene Robin's hair keep changing. When Marshall enters, her hair is straight. Then her hair is tucked behind her left ear. When it cuts to Ted and back to Robin it's changed to being behind her right ear. When it goes back to Marshall and Robin again it's behind her left ear again.

In this episode we learned that Lily's dad was not invited to her wedding. However, on "Something Borrowed" Lily claims that the reason why she had to give up the acoustic guitar player for a harp was that her father, knew a guy, whose daughter played the harp. Also, on "Moving Day",when Marshall suggest that they need to marry Ted as well as each other, Lily says "I can tell you right now, my father is not paying for that wedding", which suggests her father payed for their wedding.

If Alan Thicke was so concerned about the dinner he had to get to, why did he go to the bar with the gang after the stakeout?

When talking about the FDA tests that were run on "Tantrum" sodapop, a group of mice appear onscreen separated in glass partitions, and one of the mice explodes. However, the mouse that explodes is in a container marked "FDA Tantrum Test Control #AWF4501". The control group is used to gauge the reaction of the other groups, and they wouldn't have been given anything. The other mice should have exploded.

In the bar fight at Hoser Hut, one guy in a Vancouver jersey has "Bays" on the back, referring Carter Bays, one of the creators of the show.

In the beginning of this episode Lily and Marshall are entertaining guests in their new apartment, which was supposed to take place in 2007. Lily and Marshall did actually buy that apartment in November 2007 in "Dowisetrepla", but because of the crooked floor they discovered in "No Tomorrow" in March 2008, they couldn't move in for months later.

The calendar in Marshall's video has October 14 and 15 twice, while there are no October 11 and 12.

In the scene where Ted is sitting at the table having breakfast and watching videos Marshall has published online, he is holding the spoon in one hand, but that hand appears next to the computer when there's a close-up of the laptop screen.