I don't know if it's true, but there is a website (which means it must be, right?)
Christopher Walken for President 2008
The scary thing is, while he isn't running with any specific party as of right now, and down the road he'd consider accepting the backing of an established political party. But, from the sound of things he'd be a democrat...
"Our great country is in a terrible downward spiral. We're outsourcing jobs, bankrupting social security, and losing lives at war. We need to focus on what's important-- paying attention to our children, our citizens, our future. We need to think about improving our failing educational system, making better use of our resources, and helping to promote a stable, safe, and tolerant global society. It's time to be smart about our politics. It's time to get America back on track."
I'm just not really sure that's what the democratic party needs-but it's not like things can get much worse for us-we might as well run a guy who seems like the craziest guy in Hollywood and see how that works out for us.