Used this to rapidly restart the VMs that got stuck rebooting after being patched. There may be other ways to get the list of machines to consider for restart other than a static list.

Restart-HungVM

$vis = Connect-VIServer MyVcenter

$Servers = @("SomeServers")

foreach ($Server in $servers)
{
    if ( -not (Test-NetConnection -ComputerName $Server -CommonTCPPort SMB).TcpTestSucceeded )
    # Or maybe some other appropriate test or tests
    {
        get-vm $Server | Restart-VM -Confirm:$false
    }
}