Lots of great content, especially in the Lucene, Solr, and Hadoop areas.
Grant is teaching a two day Lucene tutorial, I'm teaching a one day Solr tutorial, and there are several other findability related sessions including Michael Busch's Advanced Indexing Techniques, my "Lucene /Solr Case Studies" talk, Hoss's "Solr Out of the Box" and "Beyond the Box".
Another interesting talk is "Intro to Mahout and Machine Learning" by Grant.
And for us search geeks, the Birds of a Feather get togethers are where it's at.
As for library search geeks - let me know if you're going to be in New Orleans, and we'll catch up.