Show-Object is absolutely awesome PowerShell cmdlet – exactly what I missed!
See how I call Get-Process and pipe the result to Show-Object. It opens a new Window where I can see all properties and expand object hierarchy; it also shows all methods, events and other members in the bottom part.
This is not included in PowerShell out-of-the-box; it’s in PowerShellCookbook module on PowerShell gallery. I got it simply by calling Install-Module PowerShellCookbook on a machine with WMF 5.0 (which is required).