Dimmo

Several general purpose cmdlets and functions.

Get-DhcpMostRecentLease Shows most recent leases from the Microsoft DHCP Server.
Invoke-RestMethodDemo Demonstrates REST with several public URLs.
Start-MOCLab Start required VMs for a particular lab from a MOC training (Microsoft Official Curriculum).
Get-Ticker Retrieves ticker info from Alpha Vantage.
Get-EventLogInterestingEvents Displays popular events from the eventlog. For example: unexpected shutdown, failed logon, account locked out.
Get-DuplicateFiles is a function that scans for duplicate files based on contents.
Send-WakeOnLan sends a magic packet to the specified MAC address on this subnet to wake up the host.
Send-Tweet send a Tweet through the Twitter API.
Get-ServiceMemoryUsage Get memory usage by service.
Get-MessageOfTheDay displays a random message, mostly PowerShell-related.  ;)
Invoke-Speak converts the specified string to audio.
Enable-RDPThroughWmi can enable Remote Desktop on a remote host when only WMI connectivity is provided.
Enable-PSRemotingThroughWmi can enable PS Remoting on a remote host when only WMI connectivity is provided.
Get-FolderSpaceReport displays a rudimentary space report on subfolders.
Measure-HashSpeed Measures the hash speed of several algorithms on a specified file

Also contains several monitoring functions:
MultiPing sends a ping to one or more specified hosts to verify connectivity. It will display colored output and by default repeats.
NetworkMonitor pings the entire subnet and logs any hosts responding or stopped responding.
ProcessMonitor monitors for start and stop events in the process listing.
ServiceMonitor monitors for new or changed services.
EventLogMonitor writes events to the screen as they occur.
FolderMonitor scans for changes in one or more folders. Perfect for SCCM Distribution Points.
Get-AzureStackDeploymentStatus