i watched this at the weekend, it's amazing. has anyone else/other Whedon fans seen it?

my favourite song:

This appeared as a moral dilemma ‘cause at first
It was weird though I swore to eliminate the worst
Of the plague that devoured humanity it’s true
I was vague on the “how” - so how can it be that you
Have shown me the light

It's a brand new day
And the sun is high
All the birds are singing
That you're gonna die
How I hesitated
Now I wonder why
It’s a brand new day

All the time that you beat me unconscious I forgive
All the crimes incomplete - listen, honestly I'll live
Mr. Cool, Mr. Right, Mr. Know-It-All is through
Now the future's so bright and I owe it all to you
Who showed me the light

It's a brand new me
I got no remorse
Now the water's rising
But I know the course
I'm gonna shock the world
Gonna show Bad Horse
It's a brand new day

And Penny will see the evil me
Not a joke, not a dork, not a failure
And she may cry but her tears will dry
When I hand her the keys to a shiny new Australia

It's a brand new day
Yeah the sun is high
All the angels sing
Because you're gonna die
Go ahead and laugh
Yeah I'm a funny guy
Tell everyone goodbye…
It’s a brand new day