This evening I finally got around to something I've been meaning to do for years: watch Pulp Fiction in chronological sequence. It really puts a whole different spin on things, in particular with the character of Vincent Vega (John Travolta). (Spoilers ahead.)
In chronological sequence, you get a better chance to see how he changes over the three days over which the film is set. To cut a long story short: after the crazy events of the first day, after which Jules (Samuel L Jackson) has had enough, it's not too surprising that Vega wants some drugs the next day, to take the edge off before he takes his boss' wife out to dinner, but he's sloppy and nearly causes her to die. By the third day, when he's staking out Butch's apartment with Marcellus, he's a physical and nervous wreck and makes a fatal mistake when Marcellus is out getting coffee.