HaltenBanken

http://www.haltenbanken.com/eng/
"Haltenbanken is a design agency. We create identities. We search for the small, important details that seperate your company form others, we look for the story that makes the customer choose your product. We create a total image, so that every time customers come across you, they get to know you a little bit better."

End Communications

http://www.endcommunications.com/
Fun flash-based portfolio site for End Communications, located in Chicago.

Hello Hikomori

http://hellohikimori.com/

Analogue (portfolio)

http://www.analogue.ca/
Nice flash-based portfolio for an ad agency in Ottawa, Canada.

Bad Assembly Portfolio

http://www.badassembly.com/
Beautiful Flash-based portfolio.

Britton Creative Blog

http://www.brittoncreative.com/blog/
Blog for Britton Creative, a design agency in the U.K.
Portfolio site: http://brittoncreative.com/index_high.php

Raincity Studios

http://www.raincitystudios.com/
"Our Designs Are As Unique As You Are. At Raincity Studios, we design with your brand in mind. We examine your identity, your goals and your market before a single pixel hits the screen."
"Our cross-functional team of designers, developers, project managers, and sales and web marketers is a strong, cohesive, happy unit. We love what we do: working hard, playing hard, and making you look good. Get to know us a little better and connect with us through our social software online communities:"
Studio that did the web design for Ask A Ninja, among others.

Ichthyo

Fish with a beautiful sense of design ;-D!

Link.