This revisiting of the Teenage Mutant Ninja Turtles phenomenon of the 1980s is a burly, brawny redo, like a kiddie cartoon on CGI steroids. With its newly agile heroes, sparkling animation and Lord of the Rings-style battle prologue, TMNT will dazzle young eyes with ease. But shouldn’t a movie about four turtles in their teens who happen to be martial-arts experts be a little less technically impressive and a little more, um, fun? This began as a one-issue, comic-book spoof in 1984, but for the most part TMNT isn’t interested in maintaining that delightfully ridiculous tone. Instead, the filmmakers are only interested in technology as the means and the end.