Okay, I'll post an observation that I made during the last couple of viewings of the movie, based on the scene this picture is taken from...if it gets discussion going, great, if not...well...so be it (to quote our favorite wizard ;) ).
Did anyone else notice how different Frodo was in this final scene as compared to the entire rest of the movie? He was very calm, almost disconnected from all of the turmoil that he had been caught up in from the time that he took possession of the ring. It is quite startling, especially when compared with the previous scenes where he makes his decision and where Sam joins him, which contain some of the most intense emotional turmoil he's experienced thus far. And yet here in this scene, his words reflect that he knows he is going forward to his death, yet it is here that he is the calmest.
I thought that was interesting, and I wonder what all went into deciding to do this this way, and since it's been awhile since I read that part of the book, does the book follow a similar emotional arc? Or is it different?
He is a different hobbit, certainly from the one who said "he could not do it alone" in Lothlorien only days before.
There is a confidence and courage about him also when he is confronted by Boromir. "Your words would seem like wisdom, but for the warning in my heart" is a pretty insolent thing for a little hobbit to say to a warrior of Gondor.
I think it happened at the shoreline when he tucks the ring back in his pocket and shoves the boat out from shore. Whether the motivating words from Gandalf were a vision, or just a memory... He became his own master... and the effect seems to have been a calming one.
Without checking, I think we get more fear, doubt and increasing fatigue from Frodo at this point in the book, but I am pleased that Jackson gave us this impression that Frodo was OK with it and serene. Angst is an unsatisfying place to leave us at the end of a film!
He is no longer a shy passenger in the fellowship, looking for direction from someone else, he has become the master of his own destiny.