Rosenbaum was about right when calling HCW ('78) charming, likable, but not very profound. Not worth revisiting for you perhaps, as you're not inclined to like this type of fantastic premise. I've enjoyed my two viewings but I prefer May's three other 70s movies.
May and Nichols were indeed a great team, but she was equally great, most of the time, when working alone and with others.
I have no problem with Stiller when the script and direction are good.
Ishtar was interesting; more interesting to my sensibility than "safer", more conventional and, perhaps, "better" comedies.