Not really, Mac OS is GUI and CLI... Windows 8 will be GUI, GUI, CLI
Windows has a CLI now?
On the off chance you were NOT being snarky, yes. PowerShell is actually pretty great. A lot of bash-e-ness (I can 'ls' for example), and it's a really powerful programming enviornment.
I guess the easiest one-liner to describe it is: In bash, you can build tiny apps and pipe textual output from one to another.