Director Gus Van Sant dives into the mainstream with Milk, his best movie in over a decade. Based on the last years of gay rights activist Harvey Milk, this film not only captures the essence of the man, but the essence of the times---both then (1970s) and now. The result is engaging, entertaining, even inspiring.

In the title role, Sean Penn gives an exuberant performance, all smiles and charisma. Yes, you read correctly: "Sean Penn" and "smiles" were mentioned in the same sentence. An undeniably great actor, Penn has as many detractors as defenders; Milk is bound to bring him new fans. Not to be overlooked are Josh Brolin, James Franco, and Diego Luna, who each hold their own in a movie that features the dynamic Penn in almost every scene. There is wonderful ensemble work here.

1970s San Francisco, and the nascent gay movement, are perfectly presented. Van Sant palpably evokes a time and place without falling into the cliches of a lesser filmmaker. Heavy use of archival footage adds to the impact. When is the last time anyone even thought of Anita Bryant? Yet here, via newsreel, she is almost a supporting character.

Ultimately, a film of this nature brings two things to mind: how much things have changed, and how much they haven't. The passing of Proposition 8 is a reminder that there is much to be done. Discrimination is still being written into American lawbooks. Milk may be preaching to the choir, but what a moving, motivating, and uplifting sermon it is.