"Whatever Works" is a 2009 comedic film that intelligently combines wit, sarcasm, and elements of charm to deliver a thoughtful commentary on the modern pursuit of happiness and love. Directed by renowned filmmaker Woody Allen, this is a movie that underlines the inherent unpredictability of life using a captivating blend of comedy, sentimentality, and sharp wit. The film stars Larry David, Evan Rachel Wood, Patricia Clarkson, and Henry Cavill in key roles.

Larry David, beloved for his work in "Curb Your Enthusiasm," is Boris Yellnikoff, the central character around whom the story revolves. Boris is a cantankerous and arrogant theoretical physicist who has made it his mission to explain to anyone who will listen how human life's inherent insignificance. He's a man who considers himself a genius, living in New York City, detached from traditional norms of society.

The film's plot takes an intriguing turn with the arrival of young and naive Melodie St. Ann Celestine, portrayed brilliantly by Evan Rachel Wood ("Westworld," "Thirteen"). She, hailing from the rural southern corners of the United States, unexpectedly appears on Boris's doorstep seeking refuge. The stark contrast between Boris's intellectual cynicism and Melodie's youthful optimism sets the ground for an unusual companionship to unravel. Despite vast differences in their outlook towards life, they find comfort in each other’s company, setting the pace for a myriad of comedic yet profound moments.

Patricia Clarkson ("The Green Mile," "Good Night, and Good Luck.") portrays Marietta, Melodie's deeply religious mother, to perfection. She injects a new dynamic into the story when she arrives in the city, searching for her wayward daughter. Clarkson's character development throughout the film enables the exploration of various themes like individualism and freedom.

Adding another layer of complexity to the narrative is British actor Henry Cavill ("Man of Steel," "The Witcher"), who bursts onto the scene as handsome and charming Randy James. The arrival of this tantalizing stranger doesn't just stir romantic interest but forces the characters to reevaluate their perceptions of love, relationships, and happiness.

"Whatever Works" is more than just a comedy of errors. It's essentially an exploration of what it means to be happy, of the universal desire to find love, and of humanity's constant grappling with existential angst. It's a critique on how we sometimes let intellect overshadow simplicity, bringing forth the idea of letting life unravel in its own unpredictable ways rather than trying to control every aspect of it – whatever works, works.

Woody Allen, as always, succeeds in delivering a movie that prompts laughter and introspection in equal measure. Larry David's crisp, acerbic humor combined with Evan Rachel Wood's endearing innocence makes for delightful viewing. Patricia Clarkson and Henry Cavill further enrich the plot with their nuanced performances, adding to the textured narrative.

The film wonderfully projects the different facets of New York City as a canvas, highlighting the city's hustling life, its amphitheater-like streets, the artistic ethos that drifts around its corners along with its extravagance and cultural heritage. The cinematography subtly complements the tonality of the plot, upping its aesthetic appeal.

The movie’s snappy dialogue, delivered impeccably by the talented cast, keeps viewers engaged throughout its entirety. Despite moments of philosophical gravity, interspersed is a light-hearted take on life that ensures an enjoyable viewing experience. The writing is poignant, clever and loaded with Woody Allen's signature sardonic humor.

Equally entertaining and profound, "Whatever Works" ultimately centers on acquainting ourselves with the unpredictability of life. It encourages the audience to embrace love as it comes and to find happiness in the chaos of existence – a philosophy that, indeed, works in real life.

To sum it up, "Whatever Works" is a must-watch for fans of witty scripts, clever humor, and thought-provoking stories. This entertaining and insightful film exploring life, relationships, and the pursuit of happiness is steeped in Woody Allen’s artistic ingenuity.