Variety: After her mesmerizingly out-there performances as an artificially intelligent being in “Her” and a come-hither extraterrestrial in “Under the Skin,” Scarlett Johansson takes a logical next step into the title role of “Lucy,” an agreeably goofy, high-concept speculative thriller about the first human being to successfully harness 100% of her brainpower. In no other sense, however, does the word “logical” apply to writer-director Luc Besson’s return to blockbuster form — which is to say, his latest aggressively stylish, self-consciously feminist, gratuitously globe-trotting pulp-trash extravaganza. Giddily recycling everything from “2001: A Space Odyssey” and “The Matrix” to yakuza actioners and National Geographic documentaries, it’s a garish, trippy, wildly uneven and finally quite disarming piece of work, graced by a moment-to-moment unpredictability that will pique audience curiosity but
may put off those who prefer their summer movies on the more conventional side.
