(In theatres, August 2009): Nobody expected much from a summer action movie adapted from toys and directed by Stephen Sommers. Still, is it too precious to ask for an entertaining experience from start to finish? G.I.Joe is occasionally fun and amusing: Elements of the first act dare to include over-the-top outrageousness (including a mysterious force relying on government-grade high technology) while the middle-act Paris sequence is an extended rollercoaster of an action sequence. For guys, it’s hard to be left indifferent by a bespectacled Sienna Miller as sexy-evil Baroness, or (to a lesser extent) Rachel Nichols as Scarlett. Meanwhile, Dennis Quaid is obviously having fun chomping on General Hawk’s cigars, and there’s at least one crazy/cool shot of an elevator ride through the G.I.Joes’ HQ. But even those simple pleasures fade fast when the film seems obsessed to sabotage its own assets: The action highlight of the film takes place in Paris, but even that sequence fails to fully engage with the audience when it runs at a continuous high speed with concordant CGI overload. The entire third act, despite enough CGI to cost twice the price-tag of two District 9 put together, is dull enough to put anyone to sleep, with only its own dumbness (“They’ve blown up the iceberg! It will sink to the bottom of the ocean!”) to provide comic relief. Worse; the Baroness character loses a lot of interest when she’s revealed to be brainwashed and, as such, really a good girl. Boring. The movie as a whole is classic Sommers, but the latter-day incoherent Sommers from Van Helsing rather than the genre-savvy Sommers from The Mummy. Enjoy the ride, but don’t be surprised if you end up asking when it will finally end.