Lots of sites which impress with their usability and clean look but I couldn’t leave out some creative CSS and Flash sites like 7splat, loungelizard, cartonblanc or agathagroup.

turbomilk.com

mx3.ch

olbeter.com

1ncu8u5.co.uk

kreestal.fr

phodana.de

stilpirat.de

schroeder-wendt.com

amyadams.com

loodo.com.br

ebonmusic.com

paramoreredd.com

agathagroup.com

championllc.com

kineda.com

pixelmator.com

7splat.com

coratolo.com.ar

apple.com/itunes

camilolanglade.com

donanubis.com

latentstrength.com

deezer.com

windowfilmsystems.com

loungelizard.com

southcreative.com.au

codebasehq.com

sheridanandco.com

angry.se

cartonblanc.com