I really love blogger because its free and easy to use.
One of the reasons I started to use it because I wanted to make my own Portfolio.
Blogging platform might not be the greatest management system to showcase your works, because if you are creative with lots of hobie's and interests in different kind of art and design aspects. There is quite hard to implement simple and good looking sorting by categories.
Of course there is some other great CMS platforms, but than you have to stick with a hosting companies and than it wont be free website and also there is always some kind a server problems which google almost hasn't.
Most of the templates here are converted from Wordpress and other platforms.

1.Viewport  DEMO   DOWNLOAD


A minimalistic portfolio theme. It has a nice and clean design with jquery slider plugin.  Originally created for Wordpress and converted to Blogger.


2.Work-a-holic  DEMO    DOWNLOAD

 One of the top 100 rated wordpress  themes in Smashing Magazine on 2010 now for blogger users.


3. Webfolio  DEMO    DOWNLOAD

 This template has a classic portfolio layout for wordpress themes and now it is converted for blogspot users.
 

4. Sound Box  DEMO     DOWNLOAD


It may be need a little redesign work but it is easy to navigate, simple and compact theme.  Originally created ass CSS theme.


5.Revolution Black Canvas  DEMO   DOWNLOAD


6.Gallery  DEMO   DOWNLOAD


This theme has earned great popularity in graphic and web designer society. I has a great jquery thumnbail hovering effect. Its easy to use, just upload template and pics and you are ready for showcasing work.

7. Linquist  DEMO     DOWNLOAD

 Asketic looking template whith classic blog layout and big pictures. Nothing too much but its doing his job great with shic. 


8. Sketchbook  DEMO     DOWNLOAD

 
9. Simplex Photo Gallery  DEMO   DOWNLOAD



10.Simplex Portfolio DEMO  DOWNLOAD

Photographers gallery theme.

11. Mashup DEMO  DOWNLOAD

 Another wordpress coverted theme. The coolest thing that it has a none-distortion thumbnails. Useful theme for web and graphic designers.


Maybe I've missed something? Your thoughts and comments are welcomed.