Being a Linux admin at heart I want my Windows Powershell prompt to look like my bash prompt (yep, I'm a nerd, or OCD, or may a little of both).

What you'll need to do is place some code in your Powershell profile file. By default Powershell doesn't allow scripts to run unless they're signed. This is good security practice. There are many articles out there on how to sign your Powershell scripts and maybe one day I'll write one and put it up here on the I.T. Nerve Center, but for now I'll just give you the code to change your prompt.