Carl Weathers wears a cap with 'VMO-2 Da Nang' on it. The same cap was worn by both Tom Selleck and Roger E. Mosley in the original series. (VMO-2 stands for Marine Observation Squadron 2)
Taylor Wily plays his character Kamekona from the remake of Hawaii 5-0. One scene is filmed at the restaurant that Steve McGarrett and Danny Williams were planning to open. This crossover from Hawaii 5-0 follows on from the appearance of Kimee Balmilero (Dr. Noelani Cunha) in the first episode of the remake of Magnum P.I.
At about 10 minutes, in a flashback, Jay Hernandez is shaving off his beard with a straight razor. With the beard gone he looks into the mirror, contemplating his remaining full mustache. After a few seconds of admiring it, he says "nah" to himself and continues to shave. The mustache looked just like Tom Selleck's iconic one from the original series.
In the early restaurant scene, Kamekona (Taylor Wily) jokingly calls Magnum "Rockford", in reference to James Garner's character in The Rockford Files (1974). The themes for both Magnum P.I. (1980) and The Rockford Files (1974) were originally written by Mike Post and Pete Carpenter.
Hawaiian "Poke" (pronounced poh kay) is raw fish (the Ahi (Tuna)), cut into 1 inch squares, usually mixed with shoyu (soy sauce), green onions and chopped sweet Maui onions, limu (specific type of raw seaweed usually soaked in vinegar).