Lock stock and two smoking barrels is wicked and i also love Thicker than water soundtrack - its the soundtrack to a jack johnsomn surfing film and is so chilled out its horizontal : )
Has to be Carlito's Way composed by Patrick Doyle. Carlito & Gail and The Cafe (Tracks 2 & 3) are the most beautiful & haunting pieces of music you'll ever hear on a film.