The line for Trader Joe's in Union Square NY always amazes me—it often has lines just to get inside the store. https://www.google.com/search?q=trader+joe%27s+14th+st+line&...
(I like Trader Joes well enough, but even when I lived very near to that specific store I'd make a conscious effort to avoid it. Proximity to New York University's dorms seems to do it no favors on the already very busy 14th St corridor.)