Whistling with the control and range that Lois' character did is an extremely rare talent.
Julia Campbell, who plays Donna, is best known for her role as Chistie Masters in Romy and Michele's High School Reunion. Her character Christie is very similar to her character Donna.
This episode has no "Camera Commentary".
Lois' whistling to Musetta's Waltz could be referencing the Peanuts character Woodstock, who also sung a number of symphonies in the animated adventures.
Lois' "talent" is whistling.
Chad's sign reads: Angered by sniveling.
The Wilkersons live in the town of Newcastle.
Malcolm's math on the home owners money actually IS NOT right. He says that 150 homes paying $23 over 20 years plus book interest, minus a retainer, equals over $83,000. That works at an average book interest (APR) of 1.75% with a retainer of $0. He must not have been listening to the attorney stating that the retainer was $2000 per year. The home owners actually have only $35k. It would amount to $83k at an incredible average APR of 9.2%.
Craig says that Sam was his canary. This refers to the way that miners used to use canary's in the mines to tell if there was a toxic gas leak. When the canary died, they knew it was no longer safe for them to breathe the air. In this case, Craig said that Sam getting fired meant he had to start being careful.
You cannot join a clinical drug trial, as Reese does, simply by saying that you aren't taking any other medications. A physical and a complete blood panel are required.
Hal confronts Lois about the shoes, saying he was paying the bills. It has previously been stated that Hal wanted Lois 'to be in charge of the finances'.
Events from season one episodes "Red Dress" and "Smunday" are referenced in this episode, as Lois finally learns the boys weren't at fault for burning her dress and Lois's stash is seen again.
Lois reveals that what Leland said to her in "Malcolm Visits College" is indeed true about Lois completely running Malcolm's life in order to give her and the rest of the family a fighting chance, which happens after Malcolm tries to get another job. This reasoning becomes very clear in the series finale when Malcolm finally forces an explanation out of her.
The stock footage of the boys on the couch while Francis and Lois argue in the flashback is from season one episode "Smunday."
When Lois is taking the last picture of her to put in the magazine that she found in the boys' drawer, she held her hand in the air and made a face, but when she throws that picture in the pile, she looks different.
During his speech, Hal says that Michael Jordan didn't even see a basketball until he was 30. This is of course a made up fact.
When Hal is showing the man beside him the snowflake he cut out, you can see a tiny pair of Swiss Army Knife scissors in his other hand. These small scissors wouldn't have cut through a paper folded as many times as it took to get that detailed of a snowflake.
First time Hal's profession is mentioned since "Company Picnic," which is systems management.
In this episode Dewey gets a tattoo which says "Lois is my mother" across his entire torso.
In the motivation seminar, Hal is bored playing tic tac toe with himself.
On the top of the paper you see the score 'me' vs 'evil me'. 'Evil me' won 14 times whereas 'me' only won one time.