Based on a popular Playstation game, the sci-fi animated feature "Ratchet & Clank" seeks to capture the kid-friendly audience this weekend, as well as the gamer crowd who have a familiarity with the space-based game characters. The film is a basic hero story about Ratchet (James Arnold Taylor, also the voice in the video game), a young lombax (a cat-like creature) who dreams of joining the Galactic Rangers, only to find that the hero business is much more complicated than it seems.