This is the first version of a script that uses .NET to query Active Directory. Some limitations apply at the moment, such as a proper filtering system, but that will hopefully be added in future updates.

# Get-ADObject.ps1
# Version 1.0
#Requires -Version 2

<#
.SYNOPSIS
Get object from Active Directory

.PARAMETER ObjectName
The name of the object you want to retrieve

.PARAMETER ObjectType
The type of object you want to retrieve (examples: user,computer,group)

.PARAMETER Domain
Active Directory domain

.EXAMPLE
Get-ADObject Server001 -ObjectType Computer -Domain my.domain.com

Get computer object for Server001

.EXAMPLE
Get-ADObject server* -Domain my.domain.com

Get all objects that starts with server

.EXAMPLE
Get-ADObject * -ObjectType user

Get all user objects in the current domain

.DESCRIPTION
This script will get object data from Active Directory
#>

[CmdletBinding()]

param(
	[Parameter(ValueFromPipeline = $true, Mandatory = $true)]
	[String]$ObjectName,
	[String]$ObjectType = "*",
	[String]$Domain = ([System.DirectoryServices.ActiveDirectory.Domain]::GetCurrentDomain()).Name
)

BEGIN{
	# Build LDAP string for AD root
	$domainSplit = $domain.Split(".")
	$adRootLDAP = "LDAP://"
	foreach ($split in $domainSplit){$adRootLDAP_tmp += ",DC=$($split)"}
	$adRootLDAP += $adRootLDAP_tmp.TrimStart(",")

	# Define AD Root
	$adRoot = New-Object System.DirectoryServices.DirectoryEntry($adRootLDAP)
}

PROCESS{
		# Build LDAP Search Filter
		$adFilter = "(&(objectClass=$($ObjectType)) (Name=$ObjectName))"
		
		# Set up AD Searcher
		$adSearcher = New-Object System.DirectoryServices.DirectorySearcher($adRoot)
		$adSearcher.Filter = $adFilter
		
		# Perform search
		$adSearchResult = $adSearcher.FindAll()
		
		# Output object
		Write-Output $adSearchResult
}
END{$adSearchResult.Dispose()}