Monday’s episode of “Hawaii Five-0″ on CBS, was particularly egregious—the most jarring, disruptive and insulting example [of product placement] I’ve seen. For nearly a minute, the unfortunate actors (Alex O’Loughlin, Grace Park and the former sumo wrestler Taylor Wily) stepped completely out of the story in order to plug Subway sandwiches, as the food-truck vendor Kamekona (Mr. Wily) is found eating five subs as part of his new diet. “Trying to eat smarter, brother,” he says. “These Subways sandwiches? So ono” (Hawaiian slang for “delicious,” though it’s also the name of a fish popular in island restaurants and presumably more healthy than a Subway sandwich). The spot — it’s a 50-second commercial, pure and simple — also works in references to the Subway pitchman Jared and several specific menu items.