Definitely. Just about anything Jordan makes is probably worth checking out, actually.
This looks great, hopefully Splunk will get some competition. Its a great tool but its far-far-far too expensive for the typical startup team.
Here's a post Jon did a few months ago on logs and Solr: http://www.loggly.com/2010/08/our-solr-system/ The deck from the SalesForce meetup is in the post as well. It's about the same as the one he did at Lucene Revolution a few weeks ago.