List VM Snapshots

Get-VMsnaps.ps1

Get-VM | 
    ForEach-Object {
        $Snap = Get-Snapshot -VM $_
        if (($Snap | Measure-Object).Count -gt 0) {
            Format-Table $_.Name, 
                @{N = "Num Snaps"; E = {($Snap | Measure-Object).Count}}, 
                @{N = "Total MB"; E = {($Snap | Measure-Object -Sum SizeMB).Sum}}, 
                @{N = "Total GB"; E = {($Snap | Measure-Object -Sum SizeGB).Sum}}
        }
    }