Christopher Nolan, who received much critical acclaim last time out with Memento, is receiving more of it with his latest thriller, Insomnia, starring Al Pacino and Robin Williams. Comparing this film with his earlier one, Rick Groen comments in the Toronto Globe and Mail: "Nolan takes pains to steer away from visual gimmickry, and manages the trickier feat of looking consistently stylish yet never showy." Mark Caro in the Chicago Tribune compares the two films this way: "Christopher Nolan's previous movie, Memento, was a thriller for film obsessives to love. His new Insomnia is one for general moviegoers to like." Jan Stuart writes in Newsday that Nolan "seals his reputation as a connoisseur of sophisticated suspense" with this film. Wesley Morris writes in the Boston Globe: "The director's detailed, ornate style and thematic preoccupations are a cry for auteur status." The actors, too, are receiving high praise. Joe Morgenstern comments in the Wall Street Journal that Pacino "brings star power to the role, while Robin Williams plays the villain with an intensity that's all the scarier for being subdued." Lou Lumenick sums up in the New York Post: "Insomnia is a four-course gourmet alternative to summer popcorn flicks, serving up the meatiest performances Al Pacino and Robin Williams have given in many years -- while confirming that [Nolan] is one of the most gifted cinematic chefs around." And Steven Rosen warns in the Denver Post that Insomnia could "keep you up at night thinking about it."