Frank's last name is Marolla.
The fraternity that Frank invites to Jimmy's bachelor party is introduced as Omicron Delta Sigma, but the three Greek letters on their shirts and other paraphernalia are the capital letters theta, delta, and sigma.
During one of the flashbacks to the causes of Young Jimmy's bowel issues, the Chance family reference the 1992 Los Angeles Riots and Young Jimmy uses Rodney King's famous line Can we all get along? King made his widely televised plea to the public as the rioting continued to escalate. The phrase used as a call for peace in this way has become a part of American pop culture.
Rosa's last name is Flores.
The episode depicts Halloween 2012 as being on a Thursday, but Halloween this year was actually on a Wednesday.
Elijah and Jordan wear Pitcher and Catcher baseball uniforms to show the relationship roles.
Sabrina's gay friends are named Jordan and Elijah, names obviously borrowed from the show's producers and occasional writers Jordan Young and Elijah Aron.
Chicken Cordon Bleu is basically an American version of Chicken Kiev. It is chicken wrapped around ham and cheese then breaded and baked. As far as anyone outside the Chance household is aware, it was not named after anyone called Gordon Blue.
Ricardo reveals Tamara's full name being "Tamara Anderson-Collins-Rabinowitz-Yang."
Maw Maw used to be a professional model and a Miss Natesville.
Jimmy's full name is James Bon Jovi Chance, and Burt's is Engelburt Jebediah Chance.
Virginia's middle name is revealed to be Slims, given to her by her mother because she wanted a free carton of cigarettes.
Shannon Woodward (Sabrina) previously appeared at the beginning of guest star Katy Perry's music video "Hot N Cold."
At 13:10, Sabrina can be seen taking a quick glance at the camera.
This is the last appearance and mention of Jimmy's pals Marcus and Javier.
Lucy's boyfriend in the store is played by Danny Masterson, the boyfriend (and now husband) of Bijou Phillips, who portrays Lucy.
In the flashback to five years ago, Jimmy, living the grocery store, is seen eating fruit. However, it was established earlier on in the season that Jimmy believed he was allergic to fruit and hence avoided it (until the episode where he discovered it was all a lie, but that was NOT five years ago.)
While Jimmy was staying in Howdy's Market he was watching the My Name Is Earl episode "Inside Probe" also created by Greg Garcia. Raising Hope later (in its penultimate second season episode) also airs an episode named "Inside Probe."
In the flashback that takes place five years ago, the Howdy's store is cowboy themed, and the employees wear blue uniforms, just like today. However, it was stated in the second episode "Dead Tooth" that the blue uniforms and the cowboy theme were introduced between the pilot and the second episode, shortly after Jimmy got Hope.
Barney's last name is revealed to be Hughes.