There are some pictures online for the film Shoot 'Em Up starring Clive Owen, Monica Bellucci and Paul Giamatti with Giamatti playing the bun totting madman.

The film is about a man called Mr Smith played by Owen who delivers a baby during a shootout and then has to protect the baby from the army of gunmen led by Giamatti. The trailer was mentioned previously on Filmstalker.

You can see the pictures over at Monsters and Critics through the excellent Twitch, and if you didn't before it's well worth having a look at that trailer again.