Danny DeVito refuses to eat junk food, so the donuts he eats in this film aren't fried, contain no sugar, and are fat-free. They were made to order by Mani's Bakery Cafe on Fairfax in Los Angeles.
The factory shown in the shots from across the river WAS the Gilbert & Bennett Mfg. Co. located in Georgetown, Connecticut (part of Wilton/Redding CT), and was vacant for years after operating as a brass and wire plant for over 100 years and a local landmark. The building was demolished in 2003 for commercial and residential development.
There is an entire sequence discussing the lack of doughnuts in the Rhode Island town that New England Wire and Cable is in. In reality, Rhode Island is home to more Dunkin Donuts per square mile than any other state.
The title of this movie is taken from a book written in 1914 by Louis D. Brandeis. In his book, Brandeis posited the fact that bankers and others who ran public companies were utilizing other people's money, and therefore owed those people fiduciary duties. In the late 1970s, a leasing company that proved to be one of the largest securities frauds to that point, used as its name "O.P.M.," standing for "other people's money." In this movie, the title embodies the same concerns about the fiduciary responsibilities of those who manage other people's money.