The supporting cast are the force that drives this movie True Romance has it all. Likable central characters, over the top 'ultra' violence, dark humour, memorable quotes, poetic monologues, surrealism and above all else, incredible performances from a cast with an immense array of talent.
The script, which was originally a 500 page screenplay that was reportedly a hybrid of Natural Born Killers and True Romance, is Tarantino at his very best. The execution is even better. The film is a 2 hour whirlwind that never settles, keeps throwing plot twists at you and most importantly, never takes itself too seriously.
The supporting cast are the force that drives this movie and the protagonists (Slater and Arquette) are completely lovable. Their 'love at first sight' storyline is completely absurd but in a strange way believable. You really buy into their relationship and want to see their romance blossom.
As for set pieces, the confrontation between Hopper and Walken is just phenomenal. I won't give too much away but it's clear that Tarantino has always had a strange, sometimes disturbing obsession with the word 'nigger'. The delivery of both Hopper and Walken's dialogues is a an absolute masterclass.
We also see Gary Oldman showing exactly why he is one of the best actors of the past 2 decades. Casting him as a dread-locked rasta is both surprising and stunning in equal measure. He is, as always, completely believable. Comparing his performance in this with say, The Dark Knight Rises (which is a very understated and underrated performance) shows this actors amazing range of diversity. I have to admit, I thought his part was slightly underwritten.
Add to that Val Kilmer playing 'The King', Chris Penn playing a cop, a pre-sopranos Gandolfini as a hit-man, Brad Pitt as a mindless stoner and you have one of the greatest casts assembled in recent years. With some brilliantly ad-libbed scenes, industry 'in-jokes' and a thrilling climax, this is a must see piece of perfection.