How to reduce a script into obscurity"

# Dragoniod wanted a vbscript that would run a random file in a directory.
# I thought this would be a good exercise in Powershell
# Below are my workings in making this the shortest one-liner as posible.

# I first wrote this script to return a random file from a folder
function Get-RndFile
{
    param([string]$dir)
   
    [array]$a=Get-ChildItem $dir | where{$_.PSIsContainer -eq $false}
    [int]$b=(($a|Measure).count)-1
    [int]$c=(new-object random).next(0,$b)
    Write-Output ($a[$c]).fullName
}
# I then set about reducing it to see if I could make a one-liner
function Get-RndFile1
{
    param($dir)
   
    $a=ls $dir|?{$_.PSIsContainer -eq $false}
    ($a[(new-object random).next(0,(($a|Measure).count)-1)]).fullName
}

# The function finally turned into a one-liner
function Get-RndFile2{((ls $args[0]|?{$_.PSIsContainer -eq $false})[(new-object random).next(0,(((ls $args[0]|?{$_.PSIsContainer -eq $false})|Measure).count)-1)]).fullName}

# The completed script as a one-liner. Cool but completely obsure.
icm{ii((ls $args[0]|?{$_.PSIsContainer -eq $false})[(new-object random).next(0,(((ls $args[0]|?{$_.PSIsContainer-eq$false})|Measure).count)-1)]).fullName}-arg c:\scripts
 

How about:
 
dir c:\test\*.* | Get-Random | Invoke-Item

Hey.. It's no longer obscure.
 
Powershell never stops amazing me on how simple some scripts can be when you use the power of the pipeline. 
 
I tried dir .* and dir * but did not think of *.* doh.
So as a result I had to resort to that ugly method of getting the files without folders.  
 
Well done.