Continuity mistake: When Bill is cutting the crusts off a sandwich towards the end, he cuts two off, goes to remove the third, then the angle changes and he's now cutting it in half. After that we hear him sweep the crusts off the board and see him hand the sandwich to BB, then a shot or two later crusts are back on the board and he cleans them off again to make another sandwich.
Continuity mistake: In the scene where the diner owner sees Beatrix walking towards the diner after getting out of the graveyard, you can see a CLOSED sign in the window and is pushed to the left corner of the window frame. When Beatrix is walking in you can see the same sign in the left window but is right up against the right of the window frame. You can actually see by the green pipe outside the diner that they have changed the sign's location. In the first shot the green pipe is outside the window. In the following shot where you can see the sign in the left window, the green pipe is outside the right window.