Cool - I didn't realize we'd done this - "When it came time to choose a vendor to help meet its needs, NBCOlympics.com quickly decided on Sun Microsystems, which had provided software and hardware for the site during the 2006 Winter Olympics in Torino, Italy."
Instructions for integrating a Shibboleth IdP with the Sun Access Manager Policy Agent for Apache Web Server. This gives you a Shib 1.3 IdP that you authenticate to via Sun Access Manager. Should work equally well with OpenSSO. From Queen's University in Kingston, Ontario, Canada.