Search and filter box at Airbnb is a great piece of design. I really like usage of iOS tabs as a change-view button.
Screenshot of quantcast.com
Screenshot of volkswagen.co.uk
Adaptive facets on Amazon from Design Patterns: Faceted Navigation
This design is great. I love the image of light being painted on the sky. It's from Threadless.com .
Splitted Search Result
Faceted navigation with slider and remove filter option
Open values = search result. Closed values = new search
Facet values + breadcrumb, no checkboxes
Eventbrite Waitlist Management