I don't know if this is supposed to just be a Superman character portrayal thread, but I thought I'd post up some of my scattered thoughts on various characters in the Superman universe:
SUPERMAN
For me, the magic ingredient in Clark Kent that makes Superman the greatest superhero of all time isn't the "Super" part. It's not his Kryptonian heritage or the amazing powers it gives him. It's the "man" part. His humble, honest, loving upbringing with the Kents instilled in him unshakeable values of decency and kindness, and a desire to use his powers selflessly, to help others. Despite all his powers, despite being an alien, Superman to me is the quintessential symbol of the best in humanity.
He's also an American icon. That's not to say he's not a global hero, but even as a non-American myself, I recognise Superman as being as American as apple pie. I know both sides of the political fence have tried to claim him as their own, but Superman cannot be a Conservative or Liberal icon. He has to be something bigger than that. This is the story of an alien from another world who was raised in the American heartlands and embraced in the big city, created by the children of immigrants. He first appeared at a time of recession and crippling financial woe, and helped inspire the country and remind them of all the great values their country could stand for.
In terms of his personality, I'm of the opinion that Clark Kent is the real person, and Superman is the disguise. Clark Kent is a polite, honest, Southern farm-boy whose bright intellect has landed him a job in the rude, crime-ridden big city. He's a fish out of water, and is a bit awkward and clumsy, but he's not putting on the act of a frail, wimpy nerd like in the Donner films. He's a big man, and looks it - with the right posture, and enough clothing coverage, muscle can very easily be mistaken for fat. And he's not a pushover. He's principled, and he'll stand up for what's right. Some visual obscurement aside, he's the Clark that was raised on Smallville by Ma and Pa Kent, and his optimism and unshakeable morality should lift and inspire the Daily Planet in a microcosm of how Superman lifts and inspires Metropolis. As a journalist and as a man, Clark Kent is a kind of hero in his own right, even without his alter ego.
Not that the alter ego isn't important. Clark Kent is an ordinary man with doubts and anxieties, but as Superman he casts them aside, as Superman must be unswayable, unimpeachable in his goodness. He is Clark's love letter to humanity, to everything he believes our spirit is capable of. Our world gave him a home, gave him a family, gave him a life, when he had nothing. Superman is the gift he wants to give back, to all of us. He is a creation to inspire, to make Metropolis and the world it represents look up and see something bigger than its own petty personal issues. He is a rallying figure, someone who has all these gifts and wants to share them, someone without flaws or hidden agendas, someone who will never give up, who will never let us down. Batman wants to protect the innocent by stamping down on crime and bringing criminals to justice, but Superman wants a world where crime is no longer necessary. He sees the good in everyone, even Lex Luthor. He doesn't just want to save people: he wants us to see him saving people, and lift ourselves up and follow his example.
I'll write up more if it occurs to me. More thoughts on other characters to follow.