Christopher Walken told how he keeps his hair. It's only 'cos he's so cool. The Times reported it here.
And my brother spends a lot of time trying to do impressions of dancing Mr. Walken. Go on and try it, it's very difficult!
"As men get older, the skin on their heads tightens and the blood gets constricted. Apparently, if you keep your scalp skin loose, you're more apt to keep your hair. So I just grab it with both hands and yank on it while I'm watching the news."