It’s a really good film that I’d happily watch again and suggest to others. Despite being released in 2005, what's striking is how well the futuristic setting has aged; current technology doesn’t diminish its impact, and the characters feel appropriately distanced from everyday devices. It manages both of these aspects effectively. The cast is superb: Ewan McGregor, Scarlett Johansson, Djimon Hounsou, Sean Bean, Steve Buscemi, and Michael Clarke Duncan are all present. The production values were clearly very high, with impressive special effects, elaborate sets, and some quite intense action scenes given the story's foundation. The core concept is excellent: a clone realizes his identity and tries to escape, leading to a desperate fight for survival. The narrative moves along at a strong pace and is well-structured; while the initial setup takes a little longer than necessary, it’s engaging rather than tedious. The main actors convincingly portray their roles, demonstrating a balance between naivete and sharp intellect – they've been working diligently to escape a complex situation for three years. The methods used to sustain the chase after the escaped clone are handled smoothly, and there's a natural exploration of the facility’s ethical choices by most of the performers, without being overly preachy. There’s plenty of science and action here; I hope you find it enjoyable.

Source on TMDB