A 1:26 promo video was posted on YouTube earlier today.
Direct to CLIO Beta (http://cliobeta.columbia.edu).
From the FAQ:
CLIO Beta is based on the open-source Blacklight search and discovery engine in use at many peer institutions including Stanford, University of Virginia, University of Wisconsin, and Johns Hopkins University. The underlying technologies powering the search are the open-source search index SOLR and the Ruby on Rails web framework.