Exhibit is the latest Project Simile "super data demo" originally developed by David Huynh. In the same vein as his Timeline, Exhibit is a simple client-side JSON data-interaction application that does not require any server-side code. Items are filtered and sorted into a main panel along the lines of a faceted browsing app.

Programmatically, an Exhibit data model can be queried much like an RDF graph: a query triple pattern is provided with either the subject or the object missing and values fitting that component in the triple pattern are returned. The query interface also allows for a set of values in either the subject or the object component of the query triple pattern; this proves useful for implementing faceted browsing. Source: Understanding Exhibit Expressions

Update: I just noticed Danny's post with a link to the project paper (which is definitely worth reading).