How to 'Unblock' multiple files at a time with PowerShell

Rather than having to download a separate executable, there is native PowerShell functionality that will allow us to unblock multiple files at a time. The command is:

dir -Path [directory path] -Recurse | Unblock-File

This command will recurse through a directory and all sub-folders and unblock them. If you have a few files that you trust but were downloaded from the Internet, you can quickly get them all by sticking them in a folder and running that PowerShell command on them to have the stream property removed. It certainly beats the weird issues that can be caused by this setting and weird workarounds to zip the files up, unblock the zip and then extracting the files again.