I can't go to San Francisco without thinking about the nuclear wessels. My husband is legitimately worried that I'll start asking random strangers about them.
Actually - considering the amount of unsolicited (and invariably wrong) advice we got from SF locals who saw us looking at transit maps and butted in to offer some friendly assistance... I may just do that at the next visit.
"Are you looking for Fisherman's Warf?"
"No."
"It's just down that way!" \
"I think we're good! Thanks for the help!"
"Actually, we're looking for nuclear wessels. Do you know where I can find nuclear wessels?"
I'd say it's the best. None of the other ones are at the top of their genres as far as action or dramatic sci-fi goes, but Star Trek IV is right up there with the best sci-fi comedies of all time.