Ya, I with this new system, I installed both Windows 7 and Fedora 10. The Windows 7 install was totally flawless and no hitch aside from no SLI. Heck, even my Windows Mobile 6.1 smartphone installed effortlessly. (first time for an OS, BTW without needing disks. It even recognized my phone type and manufacturer) However, I had to futz with F10 for an entire weekend. Granted that's the kind of futzing I enjoy, but most people don't have that kind of patience.
However, if you've been futzing with linux for as long as I have (1992 for me), I can honestly say that I'm still just amazed at how far Linux has come. Free is free, and for a free OS, these days I prefer Gnome to the Windows7 interface.