British Library Timelines :: (2010) chronological cover-flow view of BL's collection.

I love this. I think it rather falls down on the interface which is heavy and unnecessarily unwieldy - but the whole principle and the possibility to see books and manuscripts in a chronological framework is fascinating.

(as you can't get 'into' the books it is more interesting as a visual exploration than a content one - but is just wonderful).
Would be really interested to see the format used in a series of curated journey's (think a digital version of Brilliant Books)