I use my personal MacBook for work. It's one of the really nice things about working for a small business where I am the most technically capable person by miles. No-one cared in the slightest that I brought in my own laptop, configured the network to let it on, and fixed up the Active Directory stuff while I was there.
I'm now happily working on a 13.3 inch MacBook in an otherwise totally Windows environment. It's neat.
But - where my MacBook was plenty powerful enough for what I was using it for at home (like the rest of the world - email, YouTube, web stuff) It's groaning a bit under the strain of what I do at work (multiple sessions of Photoshop, Dreamweaver, Flash) So I'd been considering upgradng to a MacBook Pro for a month or so - but held off until the announcement yesterday.
In the words of Bomberman "MISTAKE!"
Because before I was prepared to wait until I had the cash together to upgrade but now
I want one RIGHT NOW!
And the breathing into a paper bag and counting to 10 isn't helping in the slightest.