Michael Madhana Kamarajan is an Indian comedy film from the Tamil-language cinema, directed by Singeetam Srinivasa Rao. It features an ensemble cast, including superstar Kamal Haasan and Kushboo Sundar as the lead roles, with an excellent supporting cast made up of Urvashi, Rupini, Nassar, Delhi Ganesh, Santhana Bharathi, Nagesh, Venniradai Moorthy, and many more. Haasan exhibits his acting prowess by playing not one, not two, but four different characters in the film. The movie also has a stupendously good score composed by music maestro Ilaiyaraaja.

The narrative itself is an intriguing mix of comedy, drama, and action, woven together by a compelling screenplay. The plot revolves around four identical brothers who get separated at birth due to circumstances beyond control. Years later, destiny dictates their reunion in the most unexpected and amusing of ways, creating a series of hilariously confusing situations filled with misunderstanding and mistaken identities.

Kamal Haasan, as mentioned earlier, puts on a masterclass, playing the four distinct characters of Michael, Madan, Kameshwaran, and Raju. Michael is a savvy and hardened criminal. Madan is a flirtatious yet shrewd businessman, Kameshwaran is a pure-hearted and rather naive cook, and Raju is a brave and strong firefighter.

One of Kamal's roles, and perhaps the film's highlight, is Kameshwaran, whose Madras Tamil dialect and comedic timing provide much of the film's light-hearted comedy. As for Kushboo Sundar, she plays the role of a smart and independent woman who becomes intertwined with the lives of these four identical men in more ways than one.

In line with traditional Indian cinema, Michael Madhana Kamarajan also has a strong romantic subplot with intricate relationships, misunderstandings, and humorous predicaments stemming from the four look-alikes. The love interests played by Urvashi, Rupini, and Roobini complement Haasan's characters beautifully, adding a layer of complexity to the plot.

Furthermore, the film features a colorful array of side characters. Often the source of much comic relief, these characters add depth without overcrowding the plot. They include a reputed criminal lord, a loyal and devoted housemaid, a hilariously incompetent detective, and a misunderstanding-ridden father who adds plenty of humor to the story.

Amidst the humor and drama, Michael Madhana Kamarajan also manages to subtly deliver a crucial social message about brotherhood, unity, and the age-old adage: love conquers all. We see a reiteration of family values and the strength in unity many times over the course of the narrative. And in a film that’s already brimming with energy, the dynamic music by Ilaiyaraaja takes the scenes to a whole new level. The songs are diverse and catchy, fitting appropriately with the scenes and driving the narrative forward.

What makes Michael Madhana Kamarajan a fascinating watch is the chain of comedy of errors that ensue when the four brothers, unknown to each other's existence, come face to face. The movie leverages this situation to create some genuinely hilarious scenarios and gags, perfectly fitting the script and not forced. Despite being released in 1990, it still holds a unique charm and remains a preferred choice for its slapstick humor, crisp dialogues, and outstanding performances.

Visually, the film excels in every department, with cinematography capturing the perfect blend of realism and comedy while making each scene more appealing. From lush green village settings to the ornate urban landscapes, there’s a visual richness to the film that’s enduring.

Overall, Michael Madhana Kamarajan is a gem from the golden age of Tamil cinema. With its unique story, a standout performance by Kamal Haasan, and direction excellently capturing the essence of a comedy-drama, it promises to keep the audience entertained from start to end and gives a hearty laugh. It's an enjoyable ride that leaves the viewer with a smile and a warm heart, making it a film worth remembering.