ProperCase PowerShell Function - Accepts a string and converts first character of each word to uppercase and converts the rest of the characters in the word to lowercase.

ProperCase.ps1

Function ProperCase {
<#
        .NAME
	 ProperCase
	.DESCRIPTION
         Accepts a string and converts first character of each word to uppercase and converts the rest of the characters in the word to lowercase.
        .PARAMETER StringToModify
	 String to modify
        .NOTES
         AUTHOR....:  Craig Grady
         LAST EDIT.:  09/25/2015
         CREATED...:  09/25/2015
#>

[CmdletBinding()]
param(
[Parameter(
Position=0, 
#Mandatory=$true, 
ValueFromPipeline=$true,
ValueFromPipelineByPropertyName=$true)]
[string]$StringToModify = 'ThE wINDOWS PowerShell TFM book CONTEST aND GiVeAwAY'
)

$list = New-Object -TypeName System.Collections.ArrayList
$StringToModify.split() | %{ $x = $_; 
                $word = New-Object -TypeName System.Collections.ArrayList  
		$null = $word.Add($x[0].ToString().ToUpper());		
		for($loop = 1; $loop -le $x.Length -1; $loop++) 
			{ $null = $word.Add($x[$loop].ToString().ToLower()) }
		$null = $list.Add(-join $word) 
	      }
$list -join " "
}