Canon 300D Digital Rebel Hack

I currently use a Canon 300D for most of my photography (I have an ancient Praktika film camera, a Rolleicord from the 60’s and a couple of the new Lomo cameras too). I have upgraded the firmware to take advantage of some of the extra features that can be unlocked in the camera. It must be realised that this can void your warranty with Canon, so it is up to you to take the risk. There are two different  hacks, Wasia's  and Undutchable’s which can be found at Digital SLR Tips and Tricks (as well as other information on modding your camera). Exactly what can be unlocked and why is also explained on the site but there are other sites that also discuss the hack (Try here and here). The official instructions for upgrading your firmware can be found on the Canon site.