Vice President Cheney

Vice President Dick Cheney appears to nod off during a news briefing by President Bush and Chinese President Hu Jintao in Hu's first Oval Office visit. (Tim Sloan/AFP/Getty Images)

I don't think he's sleeping, the Vice President was just pondering matters of national security with his eyes closed.

Insomnia can lead to desperation

Drudge links to this story about a man who backed out of re-enacting the Crucifixion.
The man was considering re-enacting the Crucifixion as part of a spiritual journey to regain his faith.
What led to his loss of faith?
“His insomnia was a major problem. He used to lie in bed all night praying for God to let him sleep and He never answered so he began to think there was no God.”