An English hit-man in Los Angeles is injected with a poison by a rival which will kill him unless he can keep the adrenalin flowing through his body. So he is required to go on a rampage through the ganglands of the city to keep alive, and to enable him to search for an antidote.
A mind numbing succession of set pieces, involving gunfire, car chases, a visit to a hospital resulting in the hero escaping on a police motorcycle wearing nothing but a surgical gown, and fairly graphic but non-revelatory sex in front of a chinese restaurant.
I’m not sure that I should be admitting that I liked this, but I did, even though I did not absolutely understand the plot (even after reading it in Wikipedia). It is not for the easily offended but we, the general public have generally voted it up and it got positive reviews on Rotten Tomatoes. It did not cost much, partially because there is no CGI involved and it made money.