This popped up this weekend. It's very important: once a device is able to play Doom, it becomes a man and receives a Bar Mitzvah and lots of cash and presents. Here's a tip from Uncle Gizmodo—someone out there has to create an "It Plays Doom" website with images of everything, from refrigerators to the iPod Shuffle playing Doom. Then we can all die happy.
Framerate is pretty low and the splash screen looks cut off and I can't even imagine what the UI is like, but this is hot hot hot.
Playing Doom on Apple's iPod [MobileRead]