Kevin Sussman (Stuart) once again receives a series' regular credit, after being demoted to guest star for the entire seventh season.
Taping was delayed by a week due to the contract negotiations of the original five actors, which led to Jim Parsons, Kaley Cuoco and Johnny Galecki earning their first million dollar each.
Sheldon says to Officer Hernandez, "You know, Sherlock Holmes liked to use cocaine to sharpen his focus". Holmes mostly used cocaine between cases when he was bored.
Marks the first appearance of Penny with her new short pixie style haircut. Kaley Cuoco cut her hair between filming of season 7 and 8, and which she makes humorous reference to in the first scene. She officially cut it for a role in the indie movie Burning Bodhi (2015), but later admitted that in reality, she was done with her long hair because of the time needed to style it for the show. By cutting it off, she hoped it would save her time in the makeup chair, but styling her shorter haircut turned out to be even more difficult and time-consuming, making it her worst decision ever.
During their discussion in their car, Raj assumes that Stuart is aged 45, not in the 30s as Howard assumes. This makes sense as Stuart is approximately 7 years older than most of the others.