Montevina and HD Video
Yet another reason to wait for the Montevina chipset before buying your new MacBook: native HD support. A regular Intel CPU can decompress and play h.264 in Quicktime or VLC, but since h.264 is doing a lot of things under the hood this ends up being it's very processor-intensive which means it'll run hot and eat a lot of battery power. The new chipset will have special sections dedicated to h.264, which means you'll be able to watch smooth-playing Blu-Ray DVDs on your laptop without cooking your lap or draining the battery. This is probably the reason why Apple hasn't put a blu-ray drive in their laptops; because the rest of the hardware isn't quite there yet, and they'd rather you wait for the best than sell someone a half-baked solution.