Welcome to the wonderful world of videography and to the VM forums!
Focal length needs to be considered relative to the area of your image capture frame. With 35mm photography, that of course was a 35mm film frame. With digital photography/videography, it is the area of your CCD.
An online calculator can be found at:
http://www.csgnetwork.com/foclencalcl.html
I'm sure there's one somewhere that would put all this relative to 35mm.
I'm sure you already know that longer focal length lenses tend to make things look closer together and that wider angles do the opposite. One thing you might try is getting the camera (at least, one of them) closer to the action. A hill looks bigger if the camera is up close to it and low while it films a jeep flying over - just like it would with your still camera.