A common request for the Nagios web interface is to give some contacts read-only access. There is a patch here: http://altinity.blogs.com/dotorg/2006/02/ that adds a new configuration option to do this. This patch will be in Nagios 3.0 (whenever that gets released). The above patch applies cleanly to Nagios 2.9 except for a one-line change in the documentation (trivial fixup).
This is OBE; now we just need Nagios 3.0(.1).