Just wanted to share this with you. Was playing with PowerShell the other day, like you do and discovered this.
Say you run Get-Process and you use the select option to choose the heading:
PS C:\PS> Get-Process zune* | select ProcessName, id
Did you know you can use an array in the select command? Neither did I!
PS C:\PS> $x=”ProcessName”,”id”
PS C:\PS> Get-Process zune* | select $x
How kewl is that?!