http://www.leavemethewhite.com/caps/index.php
Wow,
Good site Ram, I have not seen this one.
As for the aspect ratio. It's clearly artistic choice. I've seen films that break the the conventions of framing often the key is to be aware of why you are doing something.
I find just because a film is heavy in dialogue doesn't necessarily mean that should dictate your aspect ratio. As far as taping the screens of a digital camera, I have done this before... it works fine.
Personal in smaller budget work, I find wider aspect ratios to be difficult especially with dialogue. Often times 2.35 is used for pictures with heavier moods and lots of exterior work. Think about the perception of the camera and what its roll is in the film. How do your characters see the world?
P.s. I really love framing 4x3