2k was the first Windows version I remember that I didn't have to reboot daily. In my first proper job (a web developer, in 2000, writing what you'd now call 'single page applications' in DHTML) I'd go home at night and not even log out. The next day, it'd be waiting for me. At most I'd reboot weekly.

I also loved the workstation-y, crisp UI that would let me drag a window with its contents around the screen. My computer wasn't even all that powerful by the standards of the time.

Yep. Win 2k will always hold a place in my heart. My family bought a computer that came with Windows ME, and of course it crashed constantly. After getting incredibly frustrated with this my friend had a copy of this bizarre OS called Windows 2000. It took a long time to get all the drivers for everything initially, but it was stable. Damn stable.

I honestly had a server running Windows 2000 untill about 4 years ago. In that time, it was only really rebooted for system updates. It's sitting in my spare room.

As someone who traditionally has not been a Windows user, W2K is by far my favorite Windows release (7 is probably second). When I was young my house had a Win98SE box that crashed constantly and loved to run ScanDisk at startup. Updating it to Windows 2000 was nothin short of a revolution — the machine suddenly became usable! And even better, it didn’t have any consumer-oriented junk clogging it up. It was what Windows should’ve been from the start.