If I'm going to be on the subway for just a couple of stops, sometimes I won't even bother to bring my iPod. Of course, those are always the rides when the train gets stuck between stations, with the conductor coming on the PA every few minutes saying, "We'll be moving shortly." It's during those unexpected delays that I wouldn't mind having a Home Theater Watch on my wrist, letting me pass the time by watching some video on its 1.5-inch screen, assuming I remembered my headphones.
The 2 GB of internal memory should hold at least one full-length film or a couple of episodes of Prison Break, and you can transfer files (WMV, AVI, MPEG et al.) from your PC via USB. Music and pictures are welcome, too. If you're sick of enduring the terrible inconvenience of holding a portable media player in your hand and don't mind a pygmy screen, the Home Theater Watch is yours for just $150.