PowerShell - List all SQL instances on my system?

Question

Is there a Powershell command to list all SQL instances on my system? (MS SQL 2008)

Answer 1

$a = "MyComputerName"

 [System.Data.Sql.SqlDataSourceEnumerator]::Instance.GetDataSources() | ? { $_.servername -eq $a}

Aaron method return a more sure response. Read Here about Instance.GetDataSources()