Better Syslog server

I've been looking a bit on google/sourceforge/etc to try and find a more
configurable and extensible syslog server, to no avail.  Does anyone
know of such a thing?  If nothing is out there already, I'll probably
embark on a project to do it myself.  I'm thinking of a config format
somewhat like this:

# commands for syslog facility "XXX"
Facility XXX {
  # Send message to stdin of a script which can send alerts, etc
  Severity emerg ACTION /usr/local/libexec/parse-emerg.sh
  # 192.168.47.9 - sample dhcp server
  Host "192.168.47.9" {
    # log stuff from the dhcp server to a seperate file
    Severity warn FILE /var/adm/dhcp.log
  }
  # send other stuff to a default file
  Severity DEFAULT FILE /var/adm/xxx.log
}

Of course, this is just an example off the top of my head of some of the
functionality I'd like - for example, piping out to a smart script,
sending to different files based on host that sent the message, etc
etc.  I look forward to your input.  Thanks, Matt.  

-- 
/*
 * Matt Harris - Senior UNIX Systems Engineer
 * Smithsonian Institution, OCIO
 */