Cashback is the name of two films directed by Sean Ellis: a 2004 short film and a 2006 feature film. Both starred Sean Biggerstaff, Michelle Ryan and Emilia Fox. The feature was released by Gaumont in late 2006.
Ben, an aspiring artist, develops insomnia after a painful breakup with his girlfriend, Suzy. To occupy his mind and to deal with the extra hours alone, Ben begins working at a local Sainsbury's supermarket, where he meets colorful coworkers. Among them is his colleague Sharon, with whom he quickly develops a crush.
As his personal means to escape the boredom inherent in the night shift, Ben lets his imagination run wild. In particular, he imagines that he can stop time so that he can walk around in a world that is "frozen" like the pause of a film. He imagines female patrons of the supermarket stopped in time, allowing him to undress and draw them. Finally, the ability to stop time becomes real, or at least Ben believes so.