My quick experience has taught me a few things already...

1. Use Old lenses as you get more control over exposure, also the slide & turns for zoom and focus are excellent for one hand control of the lens versus the two fixed ring concept. CPU lenses I'm told won't allow you to go to an f-stop slower than f/8, to get around that in newer lenses see #2.
2. Use a Fader ND for controlling light at 24fps, useful in bright daylight conditions or when panning goes from bright location to dark.
3. Video Tripod Head, not the ball & grip heads I use for photos
4. Rely on your lens' hyperfocal distance for ease of use when DOF is not needed.
5. Exposure "Lock" stops the camera from constantly changing exposure
6. D-Movie mode has a fine Exposure Control Adjuster on-screen which is great, but you can also use the camera's +/- 5 EV stops exposure compensation (A FANTASTIC RANGE!)
7. Slow Controlled Movements give good panning, jerkiness or shaking the camera causes massive distortions
8. Focus is Manual in Movie mode, which is fine as with such a narrow DOF you need to tell the camera what to focus on in your scene anyway.

There is also the D5000 with rotatable LCD screen on the back, however I don't recommend it as it doesn't have the internal AF motor which allows you to purchase older and less expensive lenses which will more than make up for the $300 difference in camera body price if you purchase more than a kit lens with the camera (although Movie Mode is Manual Focus, in practical experience you will manual focus anyway).

In a few days I should be able to post some sample videos, and 10,000 Marines is in a week so I'll also post some scenes from that movie to whet your appetite!