I can't think of any other other movie with that writing style, though admittedly I'm not a guru of all movies nerd. It's not exactly THE KILLER FEATURE OF FILM, but it's little elements like that that make the movie stick out in my mind.

Which certainly explains why you never hear Primer dialogue quoted. It's entirely forgettble. The rule of thumb Terry Rossio put forth was that movie dialogue isn't what you say every day, it's what you'd say if you didn't think of the perfect response in the shower seven hours later.

It's a basic trick of verite - Blair Witch is the same. So is Paranormal Activity. So is REC. So is V/H/S. So is every cheap movie.

a movie doesn't have to be impeccable to be interesting.

No, but it has to offer something beyond the other mediocre dreck out there in order to inspire such loyalty. It's in my best interests to figure out what tweaks people's nipples so. Buddy of mine made a movie for $6000 and sold it to Troma for $30k; Primer played at Sundance and ended up making about ten times that. Pretty much stands on its own, except that my buddy's film was about a gay yeti.