I watched this episode for the first time and thought it was just ok. For me, there was nothing really special or memorable about this episode, and nothing that significantly added to the Magnum mythos.
However, there were a couple of interesting things that local people here in Hawaii would find noteworthy or memorable:
1. As noted in the episode guide, Karen Keawehawaii

played the part of the woman auditioning and singing the National Anthem. In Hawaii, she was very popular and even won Entertainer of the Year and Female Vocalist once or twice in the 1980s. She was also, sadly, noted for being charged with shoplifting at a local Longs Drugs store. I can't remember whatever happened to that case, but I do remember that back then I was part of a committee planning our company's Christmas party that year and we had already booked her and her family to be the main entertainment. We wanted to cancel, but all the other major entertainers had already been booked, so we kept the engagement. Of course, no one ever mentioned anything about the shoplifting incident, but even though it was a Christmas party and they did a lot of comedy in their act, there was tension and subdued atmosphere because everyone in Hawaii knew about the incident.
2. There is a scene where the cheating couple are in a car chase after TM and for a split second you see what used to be the largest pineapple in the world:
http://www.honolulumagazine.com/Honolul ... e=1#artanc. It was an iconic sight in Honolulu up until 1993 when Dole Pineapple shut down its cannery at that location and dismantled the giant pineapple. According to the before-mentioned article, the pineapple has been destroyed.
3. The cheating couple wind up in the canal in Chinatown in Honolulu, which looks like this today and as you can see hasn't changed a whole lot:

. Notice the bridge, which you can see clearly in the scene where Magnum talks to the policeman. In addition, there was the Toyo Theater (opened in 1938) located nearby there (you actually see the "TOYO" sign for a split second during the chase scene as Magnum's car zooms by). That theater was designated a national historical site in 1982. Yet, it was eventually torn down and today on that location is a Hawaii USA Federal Credit Union (that green-roofed building on the left of the above picture).
Anyway, these are just some trivia about the recent past that will soon fade from memory as time passes.