Willie Nelson wasn't hallucinating when he saw a police car pull up to his tour bus on Monday.

The country singer-songwriter was charged with drug possession earlier this week when marijuana and magic mushrooms were found inside his tour bus during a routine police inspection in Louisiana.

Hollywood heavyweights Sean Penn and Susan Sarandon are on hunger strike.

The pair are staging the protest in support of anti-war activist Cindy Sheehan, whose son Casey was killed in Iraq in 2004.