Although Sony's PlayStation Portable (PSP) is a sales sensation, the portable video format that the company created for it—the Universal Media Disk (UMD)—is falling flat as a platform for prerecorded movies. The problem, of course, is that UMD versions of Hollywood blockbusters rarely cost much less than their DVD counterparts, despite the lower quality of UMD, the small screen size of the PSP, and the PSP's inability to output to an external display, such as a TV. This is a classic case of mismanagement: UMDs should be half the price of comparable DVDs, and Sony should provide a way for PSP customers to record their own content onto blank UMDs. Until that happens, UMD is dead in the water