There are various degrees to how much this or that film rips off Pulp Fiction. But if you want to see what a full-on, 100% blatant rip off looks like, search no further than 2 Days in the Valley.
Released two years after Pulp Fiction, 2 Days in the Valley features a sizable cast of criminals who are supposed to be really quirky and funny in a series of stories that intersect in unexpected ways that you probably won't care about much. It has Jeff Daniels in it, but that's about it.
Put it this way: if Pulp Fiction were a poster of Bruce Lee, this movie would be the fat kid imitating it while looking in the mirror.