It's been close to 20 years since actress Rachael Leigh Cook starred in the memorable "This Is Your Brain On Drugs" commercial. It's hard to forget the image of cracked eggs and a woman wielding a frying pan, destroying a kitchen. Cook now stars in an updated version of the ad, this time focusing on drug laws and how they target minorities. Created for the Drug Policy Alliance by Green Point Creative, the 80-second PSA starts with Cook holding a white egg, stating: "This is one of the millions of Americans who use …