I'm pretty sure that the design on the Cinema Date Clock from Urban Outfitters isn't by Roy Lichtenstein, but it is very much in his style.
The design is described as 'comic-book style' which Lichtenstein's book also was, but the pop art supremo made the image of the crying woman his own. The image teaches the importance of not being late as a tearful blonde pays for her tardiness by being left by her boyfriend. To ensure you don't make the same mistake, the clock part of the design is a real functioning clock, so you need never keep the Brad in your life waiting again!
The clock is made from glass and measures 43cm square. It costs £45 from Urban Outfitters.