It was 1984, and Robert Zemeckis, coming off the success of Romancing The Stone, was attempting to film Back To the Future—a story about a teenager named Marty McFly who is accidentally sent back in time to 1955 and jeopardizes his family’s future. Zemeckis had concerns regarding Eric Stoltz's performance as the lead; he felt Stoltz wasn’t conveying the youthful energy needed for Marty McFly. Consequently, Stoltz was replaced by Michael J. Fox, who was already gaining popularity with Family Ties. Fox had been the initial preference but scheduling conflicts prevented his involvement earlier. The time lost while working with Stoltz unexpectedly created an opportunity for Fox to take on the role of Marty McFly and continue his work on the sitcom—a fortunate turn of events that would lead to one of the most cherished fantasy trilogies in recent times. It’s difficult to find someone who genuinely dislikes Back To The Future, the first film. While some have reservations about the second installment, acknowledging it as a transitional piece between two stronger films, and others question the third film's Western theme, this initial entry is remarkably close to perfect family entertainment. It features a well-crafted script from Zemeckis and Bob Gale that skillfully integrates clever time travel paradoxes with dramatic elements. The opening fifteen minutes contain a surprising moment—bold and playful—which immediately establishes urgency for Marty’s 1955 adventure, followed by abundant comedic relief. The action sequences are outstanding – the skateboard scene, the rock "n" roll lessons—and the filmmakers playfully reference other notable science fiction films along the way. They even incorporate an Oedipal storyline that is tastefully handled and generates a great deal of laughter, which is quite an accomplishment. Alan Silvestri’s score is energetic and enjoyable, and Huey Lewis & The News' theme song, "The Power Of Love," is incredibly catchy. Ultimately, it’s the cast that solidifies why this film stands out as exceptional fantasy escapism. Fox, Christopher Lloyd, Lea Thompson, Thomas F. Wilson, and Crispin Glover form a superb ensemble, each complementing one another and bringing justice to the well-developed narrative. With a budget of $19 million, Back To The Future earned over $381 million worldwide—figures that are hard to dispute. It’s lively, cheerful, and genuinely funny; therefore, if you don't enjoy Back To The Future, it might be wise to consult a doctor. 10/10

Source on TMDB