The video feature on SLR's is a gimmick, it works but with lots of flaws. In alot of cases you will be better to buy that cheap video-recorder or even an iPhone4 will do a much better job and not to mention the size difference.
I posted an unedited vid of me biking down whistler mountain with an iPhone 3Gs which doesn't have the video quality of an iPhone4.
You sir, have no idea.
Show me a dedicated video camera that can shoot at 1080p, swap lenses, and have the quality of an HDSLR for under $5,000. If you knew the first thing about professional video, you would know that most movies, shows, videos, etc... are made up of clips edited into coherent scenes. These are clips that are well under 12 minutes in length. Tell me, can your iPhone shoot at 1080p at 60FPS so that the clips can be reduced to 30fps or 24fps for a smooth slow motion effect. Wait, can your iPhone even select which FPS it shoots at. Do you even know what FPS your iPhone shoots at? Ever hear of a follow focus? If not, that makes generally everything that comes out of your mouth in this thread completely irrelevant.
And what are you talking about for resale? All of the mods to make a HDSLR more viable as a proper tool for video are bolt on.
The HDSLR has changed the game in the world of video. This is not something a "gimmick" would do. It's opened avenues for many independent film makers to have a camera that shoots at a quality that cameras costing over 10 times the amount of a DSLR rig can shoot at. Who's going to lug around an HDSLR rig? Well, real videographers. Apparantly you're not one of them.
www.cinema5d.com - Just an example of
professionals using a "gimmick" to make music videos, commercials, and other video productions.