Either way, I downloaded Win 7 and installed it inside a vmware (server 2) virtual machine. I've already got GRUB as my boot loader and I didn't want Win7 rewriting it with its own and creating other types of havoc.
The experience, I must say, has been pretty pleasant. I only gave it 1 gig of ram and 40 gigs on the hard drive. It's running smoothly, doesn't seem to suffer from a lack of ram. The interface is very similar to that of Vista, but seems to be better polished and somehow not as annoying. It did freeze twice on me in 2 days (and I don't use it all the time, just a little), but that could be because it's running as a Windows Server 2008 virtual machine, since running it as a Windows 7 VM wasn't an option. Or maybe because it's an RC... Or.... well, who knows. But if you install it normally, not as a VM, let me know whether or not it freezes up on you.
It seems that everything that is able to run on Vista will run on Win7. I even got PeerGuardian 2 running on it.
Anyway, here's a screenshot