I'm a long-time Windows user. For me it's a big deal to be able to run Windows apps on my laptop. The coming switch to intel looks like it will make it possible to dual-boot OSX and Windows, and this alone makes the purchase of an Apple laptop very much more likely. (In fact it's nearly certain I'll get one, provided initial reviews aren't horrible.)
If I'm not alone in this (and I don't think I am) it could very well give Apple laptop sales quite a boost.
Also, after owning an ugly but very functional Centrino laptop for a while I would really like to have something like it, only with prettier looks, better build quality and the opportunity to run OSX.
MacWorld, Intel and a Big Yawn?