For the last couple weeks I’ve been running the Windows 7 beta and really love it. The last OS I installed was XP back when that was new so I moved from XP to 7 skipping Vista (not by choice, by happening). It’s really slick and I love the Aero theme it has. Now I just need to grab the Windows 7 RC when it comes out publicly in a few weeks (rumor says May 5).