Hello monday...

Seen this web site before but it just keeps getting better.
http://www.hellomonday.com/

Really nice and really interactive website that you need to visit to get the full potential of. Full of really nice touches like the screen on the left which work really well, unlike some really jittery and drawn out animated websites, this is a really good example.

 This is the design agencies website however some of the websites they have worked on, and brand identities they have created are really amazing.