Photographers who want to go digital but can't bring themselves to get rid of their analog cameras have something to lust for. RE35 understands your plight and has come up with a digital cartridge than fits into any 35mm camera.
The RE-35 cartridge has a pull-out sensor, instead of film, that records your images in the cartridge's built-in memory. The cartridge connects to your PC or Mac via USB so you can transfer images and charge the cartridge.
Update: RE-35 has taken down their website and put up an announcement in its place that clarifies that it indeed is an April Fool's joke.