This site for Moving Image has a truly smashing interaction.
A clean example of a simple case study done well.
This 3D behemoth of a site for Diane Martel packs in some super slick transitions and project reveals.
A fun background hover effect, sexy gradients and a simple navigation mechanic promote this year's Central Saint Martins' art degree shows. Nice animation of the browser page title too.
Blue Jack Studio
A charming example of a multidirectional scroll effect.