Okay, this movie is preposterous. It starts out a mile or so over the top and then builds from there, sort of a live-action WB cartoon. No wonder I liked it.
Clive Owen plays Bugs Bunny. Really, with the carrots and everything. Except in this case, Bugs is better with a pistol than usual, and he sure does use those carrots to good advantage. The body count is astronomical, and the stunts are outrageous. Even the sex scene is outrageous, one of the best ever.
Is there a plot? Sure. Owen (they call him Mr. Smith in the movie, but we know better) saves a pregnant woman from a few dozen killers, delivers her child, and then becomes it surrogate father. Dozens, nay, hundreds more killers come after them. Why? Watch the movie, and you'll find out.
Paul Giamatti is the leader of the killers, and he's clearly having a fine time. Monica Bellucci plays the hooker with a heart of gold. I don't know who plays the kid.
Obviously some people aren't going to find the humor in a movie like this. I, on the other hand, laughed all the way through. You probably know where you stand on that kind of thing, but I thought I'd better warn you.