I'm sure you guys are right about Sam & Frodo, wasn't the scene of Sam underwater emotionally affecting, as well as being quite beautiful.
The inside of Borimir's mouth looked black right before he tried taking the ring by force. Do you think Jackson arranged that on purpose?
Now that I know that they have special lights to put just the right glint in their eyes, I no longer think anything in film is just an accident! - Everything was part of the plan! - Though I did not notice what you spoke of... I may have to see it again!