The following movies are also tied together with two common themes: They are all directed by Guy Ritchie and star Jason Statham. So you know they're going to be awesome.

When a group of no-bodies get cheated in a high-stakes card game they end up half a million pounds (that's British money) in debt with only a week to pay it back. Guy Ritchie movies always have a lot of great action and comedy. They characters, situations, and dialogue will get at least a few chuckles out of you. Lots of gangsters, guns, and f-bombs in this little gem.
Jason Statham, yet again, finds himself being chased by gangsters in one of my favorite action movies. Brad Pitt plays a bare-knuckle boxing gypsy that gets two boxing promoters in trouble with the bookmakers. This one has a great cast and a truly chaotic (yet manageable) story line. If you're looking for witty comedy, bad-ass dialogue, and pig farmers, this is the one for you.
Guy Ritchie has also made another movie that is similar to the above called Revolver which was released in 2005 in the UK and 2007 in the US. I personally do not believe it is quite good enough to suggest everyone to go watch it, but if you really liked the first two you'll probably like this one as well.