Windows XP was the most blissful iteration of Microsoft's ubiquitous operating system. That's an objective, empirical, placebo-controlled, peer-reviewed, double-blind fact. After all, it's ...

The photo you see above -- the default wallpaper for Windows XP -- is probably the most recognizable image in the world. What you probably didn't know is that it's a real photo, called Bliss ...

Even now, he still reacts like Pavlov's dog to the Windows 95 boot screen. The wallpaper, designed by designer Chang Yu, is based on the mahjong puzzle game 'Microsoft Mahjong,' released in 2012.