Canon is going to soon release its Mark II 5D digital SLR camera. One of the coolest features is that it allows you to capture movies. (The first digital SLR that I know of that allows you to do this). At close to $3000, it is being aimed at the professional photographer’s market. But, I am sure we will begin seeing this feature appear on lower end SLRs soon.
Check out this video that was taken using the EOS 5D Mark II. It is amazing for the amount of detail that is captured by a camera that is not a specialized video camera.
And here is a link to the creators blog. Vincent Laforet’s Blog