Thank you for the link, I enjoyed looking down through the first few films, in fact I have book-marked the page. The Grand Central was the best for me. Not looked any further yet though.
I have always fancied making some short films, though do not even have a camcorder. Plus, I love shallow depth of field in my photography. So perhaps a 5d would be a good tool!
We have a good range of top Canon lenses already. The only thing that would worry me would be the editing side, getting used to new software etc.