I've recently had a couple more 'Hey,Scripting Guy! Blog' posts launched into the deep-blue sea.
They make up a series on RODCs:
1. Use PowerShell to Work with RODC Accounts
2. Use PowerShell to Search Active Directory for High-Privileged Accounts
3. NEW: Weekend Scripter: Use PowerShell to Delegate Administrator of RODCs
4. NEW: Weekend Scripter: Use PowerShell to Synchronize Delegated Admin Passwords
The discussed functions can be found in a PS module:
RODC Management PowerShell Module