The photo above is the first one I ever produced after the fact, using the RAW data from a digital sensor. Given my current suite of software (iPhoto ’08, Photoshop CS, and Canon’s Digital Photo Professional), using RAW is a bit of a pain. iPhoto imports RAW files incorrectly (producing odd black frames), at least when you have your camera set to generate both RAW and JPEG files simultaneously. The Canon EOS utility works, when it comes to getting the .CRU (Canon’s proprietary RAW format) off the camera, but it does so slowly and imports redundant copies of the JPEG files.
All that being said, there are good reasons to put up with the bother. RAW lets you adjust the white balance and exposure far more effectively after the fact than JPEG does, and ultimately represents a far superior digital negative. For now, RAW files may be an awkward annoyance even on my excellent new Mac. In a few years, the storage space and processing power to deal with them will be ubiquitous.
In short, it seems worth shooting RAW+JPEG whenever there is a decent chance you will want to use any photo in an artistic way.