Personally I don’t think QT did a very good job playing the role as Jimmie in Pulp Fiction. Flame me all you want, but you can tell he’s stumbling over his lines, trying to think what’s next.
He stumbles and stutters when he says
"There’s nothing you can say that will make me forget that I love my wife, is there?"
That’s the most obvious one.
Now I’m not saying he did an awful job, it was mediocre, but I’m not sure if casting himself for that part was the best decision. All though it really would’ve made no major difference in the movie.