These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Crowning Music of Awesome: Guy Ritchie is known for this. "Golden Brown" by The Stranglers during the scene when Mickey knocks out Gorgeous George and "Fuckin' in the Bushes" for Mickey's last fight are particularly excellent examples.
"Disco Science" by Mirwais during the hare coursing scene definitely qualifies for this.
Massive Attack's "Angel" is perfect for making the burning camper scene all the more intense.
Curb-Stomp Battle: Every fight Mickey gets into. A good trait in a boxer? Not if he's supposed to be throwing them...
It's the Same, Now It Sucks: The movie is very similar in style, theme, setting and characters to Guy Ritchie's earlier Lock, Stock & Two Smoking Barrels, so while Snatch was still more or less well-received, most of the criticism revolved around Ritchie essentially retreading old ground.
Moral Event Horizon: In response to learning that Mickey wants a caravan for his mother in exchange for fighting, Bricktop responds by having Mickey's mum's caravan burnt down. While she's still in it.