One day you're a career 9-to-5er with a pending marriage. The next, you chuck it all for beads, bell-bottoms and free love. That's how things are for Harold Fine, a dedicated lawyer about to become a more dedicated dropout. Like the brownies served by Harold's new girlfriend, I Love You, Alice B. Toklas has a hidden magical ingredient: Peter Sellers, whose flower-power performance here is in the same league as Dr. Strangelove, Inspector Clouseau and other "best Sellers." Director Paul Mazursky and his co-writer Larry Tucker spread good vibes aplenty as Harold discovers tuning in and turning on can turn out daffily disastrous.