Every few days for the last 1.5 months, I've been looking around for information on a legitimate Windows 7 beta. A few days ago I got an answer, and have just installed the beta using VMWare Fusion. Now I'm running Windows 7 on my Mac, and it's looking very nice!
I must also say that this was, by far, the easiest Windows installation I've ever done. And don't worry people, I still love Linux most! Yes, even more than OS X.