Which Hotmail Is Really Hotmail?

Some of the complexities in Windows Vista are hilarious. For example, I dare you to differentiate the difference between the “sleep” and “hibernate” shutdown options in a simple declarative sentence. And, as I just learned, there are three different flavors of Hotmail: full, classic, and MSN. Huh? Is this one of the zen koans Google is said to use in job interviews? You can see a screen shot here.

What’s your favorite gratuitous complexity in your everyday operating system?