9/28/2017: Just a quicky today: A couple of quick bits I keep in my profile, and routinely leverage for server maintenance. Run ping-RDP.ps1, it will prompt you for a target server, and then run a looping port-test (1sec interval), until it detects the RDP port 3389 is up on the target box. At that point it launches an RDP session (mstsc.exe /v:$($tsrvr). Pretty simple, but handy when you're doing concurrent maintenance across multiple boxes.
Here's a Gist with the key bits of the code
And the current revision can always be found at Github: ping-RDP.ps1