Further diving into the realm of STSADM extensions, I came across Andrew Connell‘s stsadm extensions for MOSS Web Content Management, providing the ability to quickly generate site columns, generate site content types or publish all items that are currently in queue of a web content site.
If you’re interested in going above and beyond what is already out there from Andrew, Gary and others, I’d recommend reading up Tony Bierman’s blog entry on extending the stsadm command set using the ISPStsadmCommand Interface.