Alvin and the Chipmunks are Coming to Town

I remember the last time I heard of Alvin and the Chipmunks was when they released a song a few years back. Squeaky! Squeaky! Squeaky! Now, they've got a live action movie and it's coming this Christmas. I guess that's why they're all so snug in their sweaters... or maybe they're rappers now? So, what does that expression of Jason Lee all about?