movie where hugh laurie has a middle schooler go to his house

With school out for the summer, The Littles are vacationing in a cabin by the lake, and Stuart is so excited he could burst! But when Snowbell the cat is captured by a mean-spirited creature known simply as the Beast, it's up to Stuart and a skunk named Reeko to rescue him and a few other friends.

When the Littles adopt Stuart, the mouse, George is initially unwelcoming to his new brother, and the family cat, Snowbell, is even less enthusiastic. Stuart resolves to face these difficulties with as much pluck and courage as he can muster.